C/C++ Programming Help Thread

[hallo007]

if (x>=50)
is true if x is larger then or equal to 50.
but since you never make x increase nothing else will happen. add x++; or somthin

haha lol , that was in my programm , but i dindt written it in this thread;)

[CtrlAltDeleteDie]

How do I make an If,Then statement satisfy multiple conditions?

if (k->held.cross & sel = 1)
     //code;

I always do stuff in LUA and now want to learn C++. Im using the oslib (Old School Lib) to make a little sample thing to get expierence.

Just help and dont give smartass comments.

[Moonchild]

Logical AND (what you want)
if(statement1 && statement2)

Bitwise AND
if(statement1 & statement2)

Logical OR
if(statement1 || statement2)

Bitwise OR (not sure about this one :P)
if(statement1 | statement2)

[CtrlAltDeleteDie]

Thanks. I'll try figure out all the other problems myself.

[Moonchild]

Thanks. I'll try figure out all the other problems myself.

Feel free to post here, that's what this thread's supposed to be for you know :Punk:

[SG57]

Homer - You're correct, there's bitwise and logical AND, OR operators. But bitwise can return more than 1 or 0 ;)

Oh and homer - You're good with emulators, per say, right? think you could help me with a little... problem... Ill pm you with details if you want to, id very appreciate it :)

[Moonchild]

Oh and homer - You're good with emulators, per say, right? think you could help me with a little... problem... Ill pm you with details if you want to, id very appreciate it :)

Okay, sure. I might be able to help

[SG57]

Ok sweet, how can i contact you? AIM (recommended), MSN, IRC, PM (not recommened)?

I find it better to give you info in portions then one large PM :o

P.S. Thanks for this

[CtrlAltDeleteDie]

Ok. I decided to post again...

I probably dont need to post all this, but I will anyways.

int main(int argc, char* argv[])
{
	//Initialize the different parts of the library
	oslInit(0);
	oslInitGfx(OSL_PF_8888, 1);
	oslSetBkColor(RGBA(0,0,0,0));
	oslSetTextColor(RGB(255,255,255));
	oslInitConsole();
	OSL_CONTROLLER *k;

	//Main loop
	while (!osl_quit)
	{
		//Display code
                oslStartDrawing();
                paint = oslLoadImageFile("ms0:/img.png", OSL_IN_VRAM, OSL_PF_8888);
                //Draw
		oslDrawGradientRect(0, 0, 480, 272, RGB(255,255,255), RGB(255,255,255), RGB(100,100,100), RGB(100,100,100));
		oslDrawFillRect(50, 50, 150, 150, RGB(255,0,0));
.........

The main error I got was, "paint was not declared in this scope". As you can tell I have no idea what I am doing, but I am learning from trial and error.

[Moonchild]

paint = oslLoadImageFile("ms0:/img.png", OSL_IN_VRAM, OSL_PF_8888);

You haven't declared paint as a datatype, I have no idea what the image struct is called in oslib. I'm sure it says in the documentation though (if it has any).

[SG57]

It's correct. 'paint' is uninitialized. What data type must 'paint' be? Proably a structure pointer, but... to what? (i dont know OSL)

EDIT

homer beat me to it :Argh:

[Bronx]

The bitwise OR (|) take two numbers like this:

110101101
101011101
------------
111111101

[Moonchild]

EDIT (or something).
I think the stuct you want is named OSL_IMAGE.
So the paint line should look like this

OSL_IMAGE *paint = oslLoadImageFile("ms0:/img.png", OSL_IN_VRAM, OSL_PF_8888);

However, you probably want to put that outside (before) the main loop or it'll load the image on each loop :P

[CtrlAltDeleteDie]

Thanks again Homer. I dont know why I didn't include that in the code before.

[psphacker12.]

can you help me?

#include <pspdisplay.h>
#include <pspgu.h>
#include <pspkernel.h>
#include <pspctrl.h>
#include <pspdebug.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>
#include <png.h>
#include <string.h>
#include "graphics.h"
#include "framebuffer.h"
#include "flib.h"
#define printf pspDebugScreenPrintf
#define dprint pspDebugScreenPrintf
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
#define true 1
#define false !true
#define bool int
#define NULL 0

PSP_MODULE_INFO("OMG HAX!!!!1", 0, 1, 1);

/* Standard callbacks */
int exit_callback(int arg1, int arg2, void *common) {
          sceKernelExitGame();
          return 0;
}

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

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

          sceKernelSleepThreadCB();

          return 0;
}

int SetupCallbacks(void) {
          int thid = 0;

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

          return thid;
}

int rand_nums() {
        short rn0 = 0;
        short rn1 = 0;
        short rn2 = 0;
        bool win_status = false;
        SceCtrlData pad;
        sceCtrlPeekBufferPositive(&pad, 1);
        srand(sceKernelLibcTime(NULL));
        if(pad.Buttons & PSP_CTRL_CROSS) {
                 rn0=rand()%1,3;
                 rn1=rand()%1,3;
                 rn2=rand()%1,3;
        }
        if(rn0 == 1 && rn1 == 1 && rn2 == 1) {
                win_status=true;
                if(win_status == true) {
                  pspDebugScreenSetXY(0,2);
                  pspDebugScreenClear();
                  pspDebugScreenSetBackColor(0x00FF0000);
                  pspDebugScreenSetTextColor(0x00000000);
                  pspDebugScreenPrintf("You won.\n");
                  pspDebugScreenPrintf("Press '~X~' to restart.\n");
                  sceKernelSleepThread();
                  if(pad.Buttons & PSP_CTRL_CROSS) {
                    rand_nums();
                  }
                }
        }
        if(rn0 == 2 && rn1 == 2 && rn2 == 2) {
                win_status=true;
                if(win_status == true) {
                  pspDebugScreenSetXY(0,2);
                  pspDebugScreenClear();
                  pspDebugScreenSetBackColor(0x00FF0000);
                  pspDebugScreenSetTextColor(0x00000000);
                  pspDebugScreenPrintf("You won.\n");
                  pspDebugScreenPrintf("Press '~X~' to restart.\n");
                  sceKernelSleepThread();
                  if(pad.Buttons & PSP_CTRL_CROSS) {
                    rand_nums();
                  }
                }
        }
        if(rn0 == 3 && rn1 == 3 && rn2 ==3) {
                win_status=true;
                if(win_status == true) {
                  pspDebugScreenSetXY(0,2);
                  pspDebugScreenClear();
                  pspDebugScreenSetBackColor(0x00FF0000);
                  pspDebugScreenSetTextColor(0x00000000);
                  pspDebugScreenPrintf("You won.\n");
                  pspDebugScreenPrintf("Press '~X~' to restart.\n");
                  sceKernelSleepThread();
                  if(pad.Buttons & PSP_CTRL_CROSS) {
                    rand_nums();
                  }
                }
        }
        if(rn0 == 0 && rn1 == 0 && rn2 == 0) {
                pspDebugScreenSetXY(0,2);
                pspDebugScreenClear();
                pspDebugScreenSetBackColor(0x00FF0000);
                pspDebugScreenSetTextColor(0x00000000);
                pspDebugScreenPrintf("Press '~X~' to start\n");
                sceKernelSleepThread();
                if(pad.Buttons & PSP_CTRL_CROSS) {
                   pspDebugScreenSetXY(0,2);
                   pspDebugScreenClear();
                   pspDebugScreenSetBackColor(0x00FF0000);
                   pspDebugScreenSetTextColor(0x00000000);
                   rn0=rand()%1,3;
                   rn1=rand()%1,3;
                   rn2=rand()%1,3;
                }
            }
}
int main(void) {
                pspDebugScreenInit();
                SetupCallbacks();
                initGraphics();
                void show_errmsg(const char *errmsg);
          while(true) {
                    rand_nums();
          }
return 0;
}

the problem is, that it compiles but when i load it the screen isnt fully blue and when i use

flipScreen();

It makes the screen flicker.

[Grimfate126]

can you help me?

#include <pspdisplay.h>
#include <pspgu.h>
#include <pspkernel.h>
#include <pspctrl.h>
#include <pspdebug.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>
#include <png.h>
#include <string.h>
#include "graphics.h"
#include "framebuffer.h"
#include "flib.h"
#define printf pspDebugScreenPrintf
#define dprint pspDebugScreenPrintf
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
#define true 1
#define false !true
#define bool int
#define NULL 0

PSP_MODULE_INFO("OMG HAX!!!!1", 0, 1, 1);

/* Standard callbacks */
int exit_callback(int arg1, int arg2, void *common) {
          sceKernelExitGame();
          return 0;
}

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

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

          sceKernelSleepThreadCB();

          return 0;
}

int SetupCallbacks(void) {
          int thid = 0;

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

          return thid;
}

int rand_nums() {
        short rn0 = 0;
        short rn1 = 0;
        short rn2 = 0;
        bool win_status = false;
        SceCtrlData pad;
        sceCtrlPeekBufferPositive(&pad, 1);
        srand(sceKernelLibcTime(NULL));
        if(pad.Buttons & PSP_CTRL_CROSS) {
                 rn0=rand()%1,3;
                 rn1=rand()%1,3;
                 rn2=rand()%1,3;
        }
        if(rn0 == 1 && rn1 == 1 && rn2 == 1) {
                win_status=true;
                if(win_status == true) {
                  pspDebugScreenSetXY(0,2);
                  pspDebugScreenClear();
                  pspDebugScreenSetBackColor(0x00FF0000);
                  pspDebugScreenSetTextColor(0x00000000);
                  pspDebugScreenPrintf("You won.\n");
                  pspDebugScreenPrintf("Press '~X~' to restart.\n");
                  sceKernelSleepThread();
                  if(pad.Buttons & PSP_CTRL_CROSS) {
                    rand_nums();
                  }
                }
        }
        if(rn0 == 2 && rn1 == 2 && rn2 == 2) {
                win_status=true;
                if(win_status == true) {
                  pspDebugScreenSetXY(0,2);
                  pspDebugScreenClear();
                  pspDebugScreenSetBackColor(0x00FF0000);
                  pspDebugScreenSetTextColor(0x00000000);
                  pspDebugScreenPrintf("You won.\n");
                  pspDebugScreenPrintf("Press '~X~' to restart.\n");
                  sceKernelSleepThread();
                  if(pad.Buttons & PSP_CTRL_CROSS) {
                    rand_nums();
                  }
                }
        }
        if(rn0 == 3 && rn1 == 3 && rn2 ==3) {
                win_status=true;
                if(win_status == true) {
                  pspDebugScreenSetXY(0,2);
                  pspDebugScreenClear();
                  pspDebugScreenSetBackColor(0x00FF0000);
                  pspDebugScreenSetTextColor(0x00000000);
                  pspDebugScreenPrintf("You won.\n");
                  pspDebugScreenPrintf("Press '~X~' to restart.\n");
                  sceKernelSleepThread();
                  if(pad.Buttons & PSP_CTRL_CROSS) {
                    rand_nums();
                  }
                }
        }
        if(rn0 == 0 && rn1 == 0 && rn2 == 0) {
                pspDebugScreenSetXY(0,2);
                pspDebugScreenClear();
                pspDebugScreenSetBackColor(0x00FF0000);
                pspDebugScreenSetTextColor(0x00000000);
                pspDebugScreenPrintf("Press '~X~' to start\n");
                sceKernelSleepThread();
                if(pad.Buttons & PSP_CTRL_CROSS) {
                   pspDebugScreenSetXY(0,2);
                   pspDebugScreenClear();
                   pspDebugScreenSetBackColor(0x00FF0000);
                   pspDebugScreenSetTextColor(0x00000000);
                   rn0=rand()%1,3;
                   rn1=rand()%1,3;
                   rn2=rand()%1,3;
                }
            }
}
int main(void) {
                pspDebugScreenInit();
                SetupCallbacks();
                initGraphics();
                void show_errmsg(const char *errmsg);
          while(true) {
                    rand_nums();
          }
return 0;
}

the problem is, that it compiles but when i load it the screen isnt fully blue and when i use

flipScreen();

It makes the screen flicker.

its not :

while (true) {

its:

while (1) {

[psphacker12.]

its not :

while (true) {

its:

while (1) {

ok ill try that then
edit: that makes absolutley no difference..

[SG57]

Technically, if you define true as 1, it works ;)

[Bronx]

duh...

 #define true 1

lol

[Grimfate126]

Technically, if you define true as 1, it works ;)

hey, im not THAT dumb. ;)

psp, then i dunno whats wrong.. (too lazy to inspect the whole entire code.)

[amin0303]

would anybody be kind enough and help me?

ive read the insomaniacs tutorial and i followed everything written on the screen..the last step claims to change the path to a certain thing

starts with @off

cywin worked before that, but now it doesnt start. does anybody know what the path to cygwin was before chainging it so i can reinstall the toolchain (im guessing thats my problem) although ive installed it already...

Edit://

I got it :) But thanks anybody to anyone willing to help...

[Lukeson]

Strings

Hi, I'm having troubles with strings recieved via TCP; I'm getting a string "[list of artists]" from a simple TCP echo server (you don't need to view this, all it does is recieve a command (string) from the client and answer "[list of artists]".

Spoiler for server code:

    for (;;) {
        len = sizeof(client);
        fd = accept(sock, (struct sockaddr*)&client, &len);
        if (fd < 0)
            error_exit("Error while accepting\n");
		
		printf("Incoming Client: %s\n", inet_ntoa(client.sin_addr));

		if((rc = recv(fd,commandbuffer,RCVCOMMSIZE,0)) < 0)
			printf("Error while recieving the command; error-code: %d\n",WSAGetLastError());
		if(rc==0)
			printf("Client has closed the connection...\n");

		commandbuffer[rc]='\0';
		printf("Client command: %s\n",commandbuffer);

		printf("Sending answer...\n");
		sprintf(answer,"[list of artists]");
		rc=send(fd,answer,strlen(answer),0);

	printf("Closing connection\n\n\n");
        closesocket(fd);

More relevant code; How the client recieves the string from the server:

    command = "get_artists";
    command_len = strlen(command);

	if (send(socket, command, command_len, 0) != command_len) {
        printf("send() sent a different length of bytes than expected!\n");
		return;
	}
	printf("sending command get_artists...\n");

	printf("recieving...\n");
	while(rc!=SOCKET_ERROR)
	{
		printf("Recieving package %d\n", i);
		rc = recv(socket,buf,256,0);
		buf[rc]='\0';
		if(rc==0)
		{
			printf("Server has closed the connnection\n");
			break;
		}
		if(rc==SOCKET_ERROR)
		{
			printf("Error: recv, error-code: %s\n",strerror(errno));
			break;
		}
		strcat(recivedMessage, " - ");
		strcat(recivedMessage, buf);
		printf("buf: %s\n", buf);
		printf("recivedMessage: %s\n", recivedMessage);
		i++;
	}
	printf("\n\nget_artists returned: %s\n", recivedMessage);

IMHO seems fine, but look what he does:

Could it be that he prints buf, which as an array has the size of 265, completely, the whole 256 chars?
-= Double Post =-
PS: Damn that psp is dirty!

[tommydanger]

buf[rc]='\0';
if(rc==0)
{
printf("Server has closed the connnection\n");
break;
}

from the look at your picture:
you set a Null terminating character depending on rc (recieved bytes).
In your photo you also see that the psp puts out "Server has closed the connection"
This only happens if rc==0;
so in your case yout set '\0' or 0x00 immediately at the first position of your char buffer.
Furthermore printf only puts out chars till he finds '\0' so it's clear why you don't get anything ;)

[CtrlAltDeleteDie]

Im having trouble compiling a program in CYGWIN. It compiles an .elf file which i can just rename to a .pbp, but I gives an arror when it goes to make a .pbp. Ill post what CYGWIN spits out.

........
 -lpspctrl -lpspsdk -lc -lpspnet -lpspnet_inet -lpspnet_apctl -lpspnet_resolver
-lpsputility -lpspuser -lpspkernel -o Square.elf
psp-fixup-imports Square.elf
psp-strip Select Square.elf -o Select Square_strip.elf
Usage: psp-strip <option(s)> in-file(s)
 Removes symbols and sections from files
 The options are:
  -I --input-target=<bfdname>      Assume input file is in format <bfdname>
  -O --output-target=<bfdname>     Create an output file in format <bfdname>
  -F --target=<bfdname>            Set both input and output format to <bfdname>

  -p --preserve-dates              Copy modified/access timestamps to the output

  -R --remove-section=<name>       Remove section <name> from the output
  -s --strip-all                   Remove all symbol and relocation information
  -g -S -d --strip-debug           Remove all debugging symbols & sections
     --strip-unneeded              Remove all symbols not needed by relocations
     --only-keep-debug             Strip everything but the debug information
  -N --strip-symbol=<name>         Do not copy symbol <name>
  -K --keep-symbol=<name>          Only copy symbol <name>
  -w --wildcard                    Permit wildcard in symbol comparison
  -x --discard-all                 Remove all non-global symbols
  -X --discard-locals              Remove any compiler-generated symbols
  -v --verbose                     List all object files modified
  -V --version                     Display this program's version number
  -h --help                        Display this output
     --info                        List object formats & architectures supported

  -o <file>                        Place stripped output into <file>
psp-strip: supported targets: elf32-littlemips elf32-bigmips elf64-bigmips elf64
-littlemips elf64-little elf64-big elf32-little elf32-big srec symbolsrec tekhex
 binary ihex
make: *** [EBOOT.PBP] Error 1

Help?

[Moonchild]

Do you use the sdk makefile or your custom?

[CtrlAltDeleteDie]

Makefile:

TARGET = Select Square
OBJS = main.o
YOURLIBS=

INCDIR =
CFLAGS = -G4 -Wall -O2
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

LIBDIR =
LDFLAGS =
STDLIBS= -losl -lpng -lz \
		-lpspsdk -lpspctrl -lpspumd -lpsprtc -lpsppower -lpspgu -lpspaudiolib -lpspaudio -lm
LIBS=$(STDLIBS)$(YOURLIBS)

EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = SelectPSP

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

[MiG]

Right o Chaps, i got a problem, Cygwin is broke, and i cant delete it to get rid of it to re-install..

It comes up with a Error saying the folder cant be deleted, but that is utter crap since i've tried numerous unlocking programs, and i'm also the owner of the folder according to windows security.

Anyway to delete this pile of steaming **** off my harddrive ?

[Lukeson]

from the look at your picture:
you set a Null terminating character depending on rc (recieved bytes).
In your photo you also see that the psp puts out "Server has closed the connection"
This only happens if rc==0;
so in your case yout set '\0' or 0x00 immediately at the first position of your char buffer.
Furthermore printf only puts out chars till he finds '\0' so it's clear why you don't get anything ;)

So I put "buf[rc]='\0';" after the break, but he still prints those huge spaces instread of a nice and clean

sending command get_artists...
recieving...
Recieving package 1
buf: [list of artists]
recivedMessage: [list of artists]
Server has closed the connnection

get_artists returned: [list of artists]

What he prints:

[tommydanger]

no this is due to the linefeeds you added in your printf commands "\n"
last statement:
printf("\n\nget_artists returned: %s\n", recivedMessage);
make 2 linfeeds before writing the string ;)

[Lukeson]

no this is due to the linefeeds you added in your printf commands "\n"

such a huge space?

last statement:
printf("\n\nget_artists returned: %s\n", recivedMessage);
make 2 linfeeds before writing the string ;)

What? that'd be even more space!
-= Double Post =-
Could it be because 'buf' is a array of the size of 265?
-= Double Post =-

Could it be because 'buf' is a array of the size of 265?

I reduced the size of the array to 56 and still get the same screen (