C/C++ Programming Help Thread

Code:

---

//image viewer

/* image viewer created by hallo007 (8 september 2006)and produced by rp productions
  thnx to psp-programming for their tutorials
*/

#include <pspkernel.h> //alle codes voor de psp zodat schrijven gemmakelijker word
#include <pspdebug.h> //nodig voor text op het scherm te printen
#include <pspdisplay.h>
#include <pspctrl.h>
#include <stdio.h>
#include <psppower.h>
#include <pspctrl.h>
#include <pspgu.h>
#include <png.h>



#include "graphics.h"


PSP_MODULE_INFO("image viewer", 0, 1, 1);
/*
niets belangerijk we vertellen de psp de naam van het programma maar je kan het weglaten het is niet echt de naam dat op het scherm zal verschijnen
*/
#define printf pspDebugScreenPrintf
/*
we vertellen de compiller dat we screen gaan printen en om het gemmakelijk te maken zorgen we ervoor
dat de compiller vanaf nu prontf kan lezen
*/
/* Exit callback */
int exit_callback(int arg1, int arg2, void *common) {
          sceKernelExitGame();
          return 0;
}

/* Callback thread */
int CallbackThread(SceSize args, void *argp) {
          int cbid;

          cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
          sceKernelRegisterExitCallback(cbid);

          sceKernelSleepThreadCB();

          return 0;
}

/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void) {
          int thid = 0;

          thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
          if(thid >= 0) {
                    sceKernelStartThread(thid, 0, 0);
          }

          return thid;
}
//belangerijk altijd in code aanwezig zijn voor het sluiten enzovoort
int main() { //start een functie
pspDebugScreenInit();
SetupCallbacks(); //zorg ervoor dat de functie start
printf("rp productions"); //print text on screen
Image* menu;
menu = loadImage("menu.png")//laad afbeelding
SceCtrlData pad;//zo kan je de controls gebruiken
 if(pad.Buttons & PSP_CTRL_UP) {//zeg wat de psp moet doen met het indrukken van up
      int main(void) {
          scePowerSetClockFrequency(333, 333, 166);//zet de cpu speed
          }
          printf("cpu speed = 333, 333, 166"); //print text on screen
          }
 if(pad.Buttons & PSP_CTRL_DOWN) {//zeg wat de psp moet doen met het indrukken van down
      int main(void) {
          scePowerSetClockFrequency(222, 222, 111);//zet de cpu speed
          }
          printf("cpu speed = 222, 222, 111"); //print text on screen
          }           
sceKernelSleepThread(); // dit zorgt ervoor dat de psp een pause neemt waardoor je je functie kan zien
return 0; // het blift de functie  herhalen herhalen
}
/*
nu zeggen we dat de functie gedaan is en kan de psp eventueel de volgende functies uitvoeren of beter gezegd de ram blift de functie niet herladen
*/

//momenteel einde

---

still the same problems
-= Double Post =-

Zitat:

---

Zitat von homer

You do know you can copy text from the cygwin window right?

---

no i dindt now it thnx:tup:
-= Double Post =-
problems:


Roel [email protected] ~
$ cd projects/bet

Roel [email protected] ~/projects/bet
$ make
psp-gcc -I. -I/usr/local/pspdev/psp/sdk/include -O2 -G0 -Wall -c -o main.o mai
n.c
main.c:19:22: error: graphics.h: No such file or directory
main.c: In function 'main':
main.c:65: error: 'Image' undeclared (first use in this function)
main.c:65: error: (Each undeclared identifier is reported only once
main.c:65: error: for each function it appears in.)
main.c:65: error: 'menu' undeclared (first use in this function)
main.c:66: warning: implicit declaration of function 'loadImage'
main.c:67: error: syntax error before 'SceCtrlData'
main.c:68: error: 'pad' undeclared (first use in this function)
main.c:69: warning: 'main' is normally a non-static function
main.c:75: warning: 'main' is normally a non-static function
make: *** [main.o] Error 1
-= Double Post =-
and dont forget still a dummie ad c/c++ :D

You never included psppad.h, and did you add graphics.c and framebuffer.c to your OBJS in your makefile?

o now forgotten , i m a dumbass ;)

thnx
-= Double Post =-
still problems this is my makefile

Code:

---

TARGET = hello
OBJS = main.o graphics.o framebuffer.o

CFLAGS = -O2 -G0 -Wall
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

LIBDIR =
LIBS = -lpspgu -lpng -lz -lm
LDFLAGS =

EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = Image Example

PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak

---

and the main.c

Code:

---

//image viewer

/* image viewer created by hallo007 (8 september 2006)and produced by rp productions
  thnx to psp-programming for their tutorials
*/

#include <pspkernel.h> //alle codes voor de psp zodat schrijven gemmakelijker word
#include <pspdebug.h> //nodig voor text op het scherm te printen
#include <pspdisplay.h>
#include <pspctrl.h>
#include <stdio.h>
#include <psppower.h>
#include <pspctrl.h>
#include <pspgu.h>
#include <png.h>

#include <psppad.h>



#include "graphics.h"


PSP_MODULE_INFO("image viewer", 0, 1, 1);
/*
niets belangerijk we vertellen de psp de naam van het programma maar je kan het weglaten het is niet echt de naam dat op het scherm zal verschijnen
*/
#define printf pspDebugScreenPrintf
/*
we vertellen de compiller dat we screen gaan printen en om het gemmakelijk te maken zorgen we ervoor
dat de compiller vanaf nu prontf kan lezen
*/
/* Exit callback */
int exit_callback(int arg1, int arg2, void *common) {
          sceKernelExitGame();
          return 0;
}

/* Callback thread */
int CallbackThread(SceSize args, void *argp) {
          int cbid;

          cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
          sceKernelRegisterExitCallback(cbid);

          sceKernelSleepThreadCB();

          return 0;
}

/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void) {
          int thid = 0;

          thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
          if(thid >= 0) {
                    sceKernelStartThread(thid, 0, 0);
          }

          return thid;
}
//belangerijk altijd in code aanwezig zijn voor het sluiten enzovoort
int main() { //start een functie
pspDebugScreenInit();
SetupCallbacks(); //zorg ervoor dat de functie start
printf("rp productions"); //print text on screen
Image* menu;
menu = loadImage("menu.png")//laad afbeelding
SceCtrlData pad;//zo kan je de controls gebruiken
 if(pad.Buttons & PSP_CTRL_UP) {//zeg wat de psp moet doen met het indrukken van up
      int main(void) {
          scePowerSetClockFrequency(333, 333, 166);//zet de cpu speed
          }
          printf("cpu speed = 333, 333, 166"); //print text on screen
          }
 if(pad.Buttons & PSP_CTRL_DOWN) {//zeg wat de psp moet doen met het indrukken van down
      int main(void) {
          scePowerSetClockFrequency(222, 222, 111);//zet de cpu speed
          }
          printf("cpu speed = 222, 222, 111"); //print text on screen
          }           
sceKernelSleepThread(); // dit zorgt ervoor dat de psp een pause neemt waardoor je je functie kan zien
return 0; // het blift de functie  herhalen herhalen
}
/*
nu zeggen we dat de functie gedaan is en kan de psp eventueel de volgende functies uitvoeren of beter gezegd de ram blift de functie niet herladen
*/

//momenteel einde

---

-= Double Post =-
do somone see it in the code
because i mixed some tutorials
-= Double Post =-
no one????:s:s

question:

im using OSlib, and i want to print a variable (integer) to the screen. i dont get how. i tried sprintf, dont work. i checks the docs, but i guess is missed, and i RLY dont wnat to read 1mb worth of text all over again.

so my question is:

how do you print variables to the screen in OSlib?

Zitat:

---

Zitat von Grimfate126

how do you print variables to the screen in OSlib?

---

Quick and dirty integer printing:

Code:

---

char temp[64];
int i = 1;
snprintf(temp, 63, "The value of i is %d", i);
oslPrintf_xy(1, 5, temp);

---

I know this may seem a noobish question but...
When you create an eboot, how do you use a C++ instead of a C file(as shown in a tutorial im veiwing), is it basically by putting a cpp file in the project folder instead of a c file?
--Vaza

Zitat:

---

Zitat von Vaza

I know this may seem a noobish question but...
When you create an eboot, how do you use a C++ instead of a C file(as shown in a tutorial im veiwing), is it basically by putting a cpp file in the project folder instead of a c file?
--Vaza

---

Yup, the pspsdk automatically finds out whether it should use psp-gcc or psp-g++. So just change the extension to .cpp and it should work just fine.

Zitat:

---

Zitat von homer

Yup, the pspsdk automatically finds out whether it should use psp-gcc or psp-g++. So just change the extension to .cpp and it should work just fine.

---

Thanks, i'm just starting C++, im using a "Learn C++ in 21 Days" guide, im on day 3.

http://newdata.box.sk/bx/c/
If anyone wants to see the guide, thats it^^

Zitat:

---

Zitat von СУББОТА

Quick and dirty integer printing:

Code:

---

char temp[64];
int i = 1;
snprintf(temp, 63, "The value of i is %d", i);
oslPrintf_xy(1, 5, temp);

---

---

you can do this as simple as:

Code:

---

int i = 1;
oslPrintf_xy(1, 5, "%d", i);

---

however, i recommend:

Code:

---

int i=1;
oslDebug("i = %d", i);

---

OK, I'm making my first, non-tutorial application. But I get an error when compiling it. I've already sorted through and eliminated most of the errors, but I still have this left. Anyone know how to fix it? What does 'undefined reference' mean?

Code:

---

$ make
psp-gcc -I. -I/usr/local/pspdev/psp/sdk/include -O2 -G0 -Wall  -L. -L/usr/local/
pspdev/psp/sdk/lib  mp3player.o main.o -lmad -lpspaudiolib -lpspaudio -lpsppowe
r -lpspdebug -lpspdisplay -lpspge -lpspctrl -lpspsdk -lc -lpspnet -lpspnet_inet
-lpspnet_apctl -lpspnet_resolver -lpsputility -lpspuser -lpspkernel -o mp3.elf
main.o: In function `main':
main.c:(.text+0xf0): undefined reference to `initGraphics'
main.c:(.text+0x13c): undefined reference to `loadImage'
main.c:(.text+0x164): undefined reference to `blitAlphaImageToScreen'
collect2: ld returned 1 exit status
make: *** [mp3.elf] Error 1

---

Zitat:

---

Zitat von ARza

OK, I'm making my first, non-tutorial application. But I get an error when compiling it. I've already sorted through and eliminated most of the errors, but I still have this left. Anyone know how to fix it? What does 'undefined reference' mean?

Code:

---

$ make
psp-gcc -I. -I/usr/local/pspdev/psp/sdk/include -O2 -G0 -Wall  -L. -L/usr/local/
pspdev/psp/sdk/lib  mp3player.o main.o -lmad -lpspaudiolib -lpspaudio -lpsppowe
r -lpspdebug -lpspdisplay -lpspge -lpspctrl -lpspsdk -lc -lpspnet -lpspnet_inet
-lpspnet_apctl -lpspnet_resolver -lpsputility -lpspuser -lpspkernel -o mp3.elf
main.o: In function `main':
main.c:(.text+0xf0): undefined reference to `initGraphics'
main.c:(.text+0x13c): undefined reference to `loadImage'
main.c:(.text+0x164): undefined reference to `blitAlphaImageToScreen'
collect2: ld returned 1 exit status
make: *** [mp3.elf] Error 1

---

---

let us see your code. im thinking that yu havent included a library.

Nevermind, I found the problem. It was in the Makefile.
-= Double Post =-
OK, now I have 2 more problems.
1. I have pasted my background to the screen, but when I try to print something on the background, it just shows a black screen with text. No background shown.
2. How do I position the text? Like X and Y coordinates?

Zitat:

---

Zitat von ARza

Nevermind, I found the problem. It was in the Makefile.
-= Double Post =-
OK, now I have 2 more problems.
1. I have pasted my background to the screen, but when I try to print something on the background, it just shows a black screen with text. No background shown.
2. How do I position the text? Like X and Y coordinates?

---

If you're using the graphics.c & graphics.h then the function you require is printTextScreen.

Otherwise....

If you are using pspDebugScreenPrintf then you get that black 'box' surrounding your text, it's a debug screen after all - nothing more.

pspDebugScreenSetXY to position your text.

(I'd recommend using printTextScreen if you are indeed using graphics.c & graphics.h)

Thanks. I found that out already, but I was too tired to post. BTW- AniMate is a GREAT game. You should have entered it into the PSPU contest. You could have won. Keep up the good work. :tup:
-= Double Post =-
OK, now I'm doing something a little different. I'm building a PRX. But I get this error:

Code:

---

$ make
psp-gcc -I/usr/local/pspdev/psp/sdk/include/libc -I. -I/usr/local/pspdev/psp/sdk
/include -O2 -G0 -Wall  -c -o main.o main.c
make: *** No rule to make target `exports.o', needed by `hello.elf'.  Stop.

---

You need an exports.exp file, I'd suggest you have a look at the sdk examples.

EDIT: Nevermind, it's fixed.
-= Double Post =-
Sorry for asking for so much help, but now I'm getting this really long error. I've been trying to sort it for like 20 minutes, and I can't figure it out. Maybe someone else knows what's wrong.

Code:

---

[email protected] ~/projects/helloPRXsrc
$ make
psp-gcc -I/usr/local/pspdev/psp/sdk/include/libc -I. -I/usr/local/pspdev/psp/sdk
/include -O2 -G0 -Wall  -c -o main.o main.c
psp-gcc -I/usr/local/pspdev/psp/sdk/include/libc -I. -I/usr/local/pspdev/psp/sdk
/include -O2 -G0 -Wall  -L. -L/usr/local/pspdev/psp/sdk/lib -specs=/usr/local/ps
pdev/psp/sdk/lib/prxspecs -Wl,-q,-T/usr/local/pspdev/psp/sdk/lib/linkfile.prx
main.o graphics.o framebuffer.o exports.o -lpspgu -lpng -lz -lm -lpspdebug -lpsp
display -lpspge -lpspctrl -lpspsdk -lpsplibc -lpspnet -lpspnet_inet -lpspnet_apc
tl -lpspnet_resolver -lpsputility -lpspuser -lpspkernel -o hello.elf
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngerror.o): In
 function `png_warning':
pngerror.c:(.text+0x14c): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x14c): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
pngerror.c:(.text+0x1a8): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x1a8): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
pngerror.c:(.text+0x1ac): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x1ac): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngerror.o): In
 function `png_error':
pngerror.c:(.text+0x2a8): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x2a8): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
pngerror.c:(.text+0x310): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x310): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngerror.o):png
error.c:(.text+0x314): more undefined references to `_impure_ptr' follow
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngerror.o): In
 function `png_error':
pngerror.c:(.text+0x314): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngrutil.o): In
 function `png_handle_gAMA':
pngrutil.c:(.text+0xd08): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngrutil.o): In
 function `png_handle_cHRM':
pngrutil.c:(.text+0x1470): relocation truncated to fit: R_MIPS_GPREL16 against `
_impure_ptr'
pngrutil.c:(.text+0x14e0): relocation truncated to fit: R_MIPS_GPREL16 against `
_impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngrutil.o): In
 function `png_handle_sRGB':
pngrutil.c:(.text+0x1790): relocation truncated to fit: R_MIPS_GPREL16 against `
_impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngwrite.o): In
 function `png_convert_from_time_t':
pngwrite.c:(.text+0xac4): undefined reference to `gmtime'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngwutil.o): In
 function `png_write_cHRM':
pngwutil.c:(.text+0x1120): undefined reference to `_impure_ptr'
pngwutil.c:(.text+0x1120): additional relocation overflows omitted from the outp
ut
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngwutil.o): In
 function `png_write_cHRM_fixed':
pngwutil.c:(.text+0x16dc): undefined reference to `_impure_ptr'
collect2: ld returned 1 exit status
make: *** [hello.elf] Error 1

---

Zitat:

---

Zitat von ARza

EDIT: Nevermind, it's fixed.
-= Double Post =-
Sorry for asking for so much help, but now I'm getting this really long error. I've been trying to sort it for like 20 minutes, and I can't figure it out. Maybe someone else knows what's wrong.

Code:

---

[email protected] ~/projects/helloPRXsrc
$ make
psp-gcc -I/usr/local/pspdev/psp/sdk/include/libc -I. -I/usr/local/pspdev/psp/sdk
/include -O2 -G0 -Wall  -c -o main.o main.c
psp-gcc -I/usr/local/pspdev/psp/sdk/include/libc -I. -I/usr/local/pspdev/psp/sdk
/include -O2 -G0 -Wall  -L. -L/usr/local/pspdev/psp/sdk/lib -specs=/usr/local/ps
pdev/psp/sdk/lib/prxspecs -Wl,-q,-T/usr/local/pspdev/psp/sdk/lib/linkfile.prx
main.o graphics.o framebuffer.o exports.o -lpspgu -lpng -lz -lm -lpspdebug -lpsp
display -lpspge -lpspctrl -lpspsdk -lpsplibc -lpspnet -lpspnet_inet -lpspnet_apc
tl -lpspnet_resolver -lpsputility -lpspuser -lpspkernel -o hello.elf
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngerror.o): In
 function `png_warning':
pngerror.c:(.text+0x14c): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x14c): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
pngerror.c:(.text+0x1a8): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x1a8): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
pngerror.c:(.text+0x1ac): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x1ac): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngerror.o): In
 function `png_error':
pngerror.c:(.text+0x2a8): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x2a8): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
pngerror.c:(.text+0x310): undefined reference to `_impure_ptr'
pngerror.c:(.text+0x310): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngerror.o):png
error.c:(.text+0x314): more undefined references to `_impure_ptr' follow
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngerror.o): In
 function `png_error':
pngerror.c:(.text+0x314): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngrutil.o): In
 function `png_handle_gAMA':
pngrutil.c:(.text+0xd08): relocation truncated to fit: R_MIPS_GPREL16 against `_
impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngrutil.o): In
 function `png_handle_cHRM':
pngrutil.c:(.text+0x1470): relocation truncated to fit: R_MIPS_GPREL16 against `
_impure_ptr'
pngrutil.c:(.text+0x14e0): relocation truncated to fit: R_MIPS_GPREL16 against `
_impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngrutil.o): In
 function `png_handle_sRGB':
pngrutil.c:(.text+0x1790): relocation truncated to fit: R_MIPS_GPREL16 against `
_impure_ptr'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngwrite.o): In
 function `png_convert_from_time_t':
pngwrite.c:(.text+0xac4): undefined reference to `gmtime'
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngwutil.o): In
 function `png_write_cHRM':
pngwutil.c:(.text+0x1120): undefined reference to `_impure_ptr'
pngwutil.c:(.text+0x1120): additional relocation overflows omitted from the outp
ut
/usr/local/pspdev/lib/gcc/psp/4.0.2/../../../../psp/lib/libpng.a(pngwutil.o): In
 function `png_write_cHRM_fixed':
pngwutil.c:(.text+0x16dc): undefined reference to `_impure_ptr'
collect2: ld returned 1 exit status
make: *** [hello.elf] Error 1

---

---

i 90% sure hthe problem is in your makefile. check if you have everything correc in there.
-= Double Post =-
anybody know a good md2 loader with animation capabalities?

If you have either of these:

Code:

---

USE_PSPSDK_LIBC = 1
USE_KERNEL_LIBS = 1

---

In your makefile, take them out.

Zitat:

---

Zitat von Insomniac197

If you have either of these:

Code:

---

USE_PSPSDK_LIBC = 1
USE_KERNEL_LIBS = 1

---

In your makefile, take them out.

---

offtopic:

can u ckeck ur pm's?

EDIT: Nevermind

i m developing for pc now

Code:

---

#include <cstdlib>
#include <iostream>
#include <conio.h>


using namespace std;

int mult (int x, int y);  //samenbrengen

inline void vermenigvuldigen()
{
  int x;
int y;


cout<<"schrijf een getal voor te vermenigvuldigen/optellen/aftrekken of delen: ";
cin>>x;

cout<<"schrijf een tweede getal om het eerste mee te bewerken ";

cin>>y;
cin.ignore();
cout<<"het produkt van de 2 getallen is "<<mult (x,y)<<"\n";
cout<<"de som van de 2 getallen is "<<x+y<<"\n";
cout<<"het quotient van de 2 getallen is "<<x/y<<"\n";
cout<<"en met aftrekken bekomen we "<<x-y<<"\n";
printf("gemaakt door ROEL\n\n\n\n\n\n\n\n\n");
vermenigvuldigen();
cin.get();
}
int mult (int x, int y)
{
    return x*y;
}   

int main()
{
vermenigvuldigen();
cin.get();
}

---

the problem is
if you type 999999999999 , the program crashed
what can you do so you cant type it
ps : i tried this already
if (x>99999999){
printf("pleas enter another nuber, it's to big")
vermenigvuldigen();
}

The int datatype can't handle that much data, change it to a long or something.

Zitat:

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Zitat von homer

The int datatype can't handle that much data, change it to a long or something.

---

I thought both a long and int had the same size (4 bytes) on the psp? or have I been misinformed?

I use double for those huge variables.

cant you block for using to much data???
so i can just use int???
-= Double Post =-

Zitat:

---

Zitat von waterbottle

I thought both a long and int had the same size (4 bytes) on the psp? or have I been misinformed?

I use double for those huge variables.

---

this is for PC
(everbody told me to learn it first on pc and than on psp)

Zitat:

---

Zitat von hallo007

cant you block for using to much data???
so i can just use int???
-= Double Post =-

this is for PC
(everbody told me to learn it first on pc and than on psp)

---

ah, ok then.

I'm not sure, but maybe you could do:
if((cin>>y)>sizeof(int)) {
//code if to big
} else {
}

that might not work though..

No it won't... He wouldn't be able to use the data.

You might want to change it to an unsigned int though.
Or if you want a long long (it can handle values from –9,223,372,036,854,775,80 7 to 9,223,372,036,854,775,807 )

mayby i can just write an warning
that's easier for me:d

Could someone tell me if PC SDL and PSP SDL are the same?
thanks.
--Vaza

Not exactly no.

PSP SDL is slow as some of the rendering is done in software.

I think he means the functions though... As far as I know the functions should be he same

can someone explain to me the basic func's in C?

printf("hello world")
prints hello world on the psp screen.

Zitat:

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Zitat von PSP-Maniac

printf("hello world")
prints hello world on the psp screen.

---

um, no it doesnt...
it does if you define it like this

Code:

---

#define printf pspDebugScreenPrintf

---

and still you didn't clarify the x and y coordinates..

And if you want a full documentation check out this http://psp.jim.sh/pspsdk-doc/

Zitat:

---

Zitat von Bronx

um, no it doesnt...
it does if you define it like this

Code:

---

#define printf pspDebugScreenPrintf

---

and still you didn't clarify the x and y coordinates..

And if you want a full documentation check out this http://psp.jim.sh/pspsdk-doc/

---

hehe sorry forgot that.

how can you change the text color in C?

Zitat:

---

Zitat von psphacker12.

how can you change the text color in C?

---

Depends on what you use to print the text...

i use

Code:

---

pspDebugScreenPrintf("wassup homedawg, hows it hangin?")

---

Okay, then you'll have to use the
pspDebugScreenSetTextColo r
function.

Example:

Code:

---

#define RGB(r,g,b) (((b)<<16)|((g)<<8)|(r))

int main(int argc, char **argv)
{
  pspDebugScreenInit();
  pspDebugScreenSetTextColor(RGB(255, 0, 0)); // change color to red
  pspDebugScreenPrintf("Red");
  pspDebugScreenSetTextColor(RGB(0, 255, 0)); // change color to green
  pspDebugScreenPrintf("Green");
  pspDebugScreenSetTextColor(RGB(0, 0, 255)); // change color to blue
  pspDebugScreenPrintf("Blue");
}

---

If I wanted to change/read a memory address could I do somthing like this
int *pointer = 0x88000000;
?

and how could I do it if the memory address is a pointer to a different address and I wanted the pointer to point to that?

like,
int *pointer = 0x88000000;


0x88000000 is 0x88100004
so the pointer now points to 0x88100004. How should I do that?

better typecast the address to a pointer (though it should compile with a mere warning without it):
int* pointer = (int*)0x88000000;

To change the pointer, just do
pointer = (int*)0x88100004;