C/C++ Programming Help Thread

[Waterbottle]

How can I fix that?

add a ; to the end of the last line.

[psphacker12.]

Great idea, quote the entire post for one small part of it (-_-;)

int nums() {
     if (rn0 != (NULL) && rn1 != (NULL) && rn2 != (NULL)) {
       rn0=0
       rn1=0
       rn2=0
     }

int nums() {
   int rn0=0;
   int rn1=0;
   int rn2=0;
   SceCtrlData pad;

Here is another tip, buy this book:
The C programming Language or this one Beginning C++ Game Programming or at LEAST read this online one: Thinking like a computer scientist [C++]

I've been looking over "Thinking like a computer scientist [C++]" and I was wondering should I use cout<< or printf??

[yaustar]

Use printf. Getting the STL library to work with the PSP compiler is a bit of work.

[psphacker12.]

Great idea, quote the entire post for one small part of it (-_-;)

int nums() {
     if (rn0 != (NULL) && rn1 != (NULL) && rn2 != (NULL)) {
       rn0=0
       rn1=0
       rn2=0
     }

int nums() {
   int rn0=0;
   int rn1=0;
   int rn2=0;
   SceCtrlData pad;

Here is another tip, buy this book:
The C programming Language or this one Beginning C++ Game Programming or at LEAST read this online one: Thinking like a computer scientist [C++]

couldnt i just do this??

int nums() {
  funcs();

or would that give me an error?
im trying it now. :)

[yaustar]

You are just calling the function. It will still give the same error. Read about variable scope.

[Lukeson]

GuitarGod1134:

This is because the buf that was in the function was created locally on the stack and the function returns a pointer to it. However, after the pointer assignment to buffer, it is removed from the stack since it is no longer in scope and now pointer is pointing to garbarge. A better method would be to do:

[ code ]

That works, thank you!

[Bronx]

Great idea, quote the entire post for one small part of it (-_-;)

int nums() {
     if (rn0 != (NULL) && rn1 != (NULL) && rn2 != (NULL)) {
       rn0=0
       rn1=0
       rn2=0
     }

int nums() {
   int rn0=0;
   int rn1=0;
   int rn2=0;
   SceCtrlData pad;

Here is another tip, buy this book:
The C programming Language or this one Beginning C++ Game Programming or at LEAST read this online one: Thinking like a computer scientist [C++]

I believe the fist book you mentioned can be read for free here: http://www.fis.cinvestav.mx/~jccoron...guageAnsiC.pdf

[psphacker12.]

#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 "graphics.h"
#define printf pspDebugScreenPrintf
#define dprint pspDebugScreenPrintf
#define true 1
#define false !true
#define bool int
#define NULL 0

PSP_MODULE_INFO("???", 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 nums() {
     int rn0 = 0;
     int rn1 = 0;
     int rn2 = 0;
     bool status = 0;
     SceCtrlData pad;
     sceCtrlPeekBufferPositive(&pad, 1);
     srand(sceKernelLibcTime(NULL));
     if (pad.Buttons != 0){
          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) {
          pspDebugScreenSetXY(0,2);
          pspDebugScreenSetBackColor(0x00FF0000);
          pspDebugScreenSetTextColor(0x00000000);
          pspDebugScreenPrintf("You won.\n");
          pspDebugScreenPrintf("Press 'X' to restart.\n");
          if(pad.Buttons & PSP_CTRL_CROSS) {
            nums();
          }
     }
     if (rn0 == 2 && rn1 == 2 && rn2 == 2) {
          pspDebugScreenSetXY(0,2);
          pspDebugScreenSetBackColor(0x00FF0000);
          pspDebugScreenSetTextColor(0x00000000);
          pspDebugScreenPrintf("You won.\n");
          pspDebugScreenPrintf("Press 'X' to restart.\n");
          if(pad.Buttons & PSP_CTRL_CROSS) {
            nums();
          }
     }
     if (rn0 == 3 && rn1 == 3 && rn2 ==3) {
          pspDebugScreenSetXY(0,2);
          pspDebugScreenSetBackColor(0x00FF0000);
          pspDebugScreenSetTextColor(0x00000000);
          pspDebugScreenPrintf("You won.\n");
          pspDebugScreenPrintf("Press 'X' to restart.\n");
          if(pad.Buttons & PSP_CTRL_CROSS) {
            nums();
          }
     }
     if(rn0 == 0 && rn1 == 0 && rn2 == 0) {
          pspDebugScreenSetXY(0,2);
          pspDebugScreenClear();
          pspDebugScreenSetBackColor(0x00FF0000);
          pspDebugScreenSetTextColor(0x00000000);
          pspDebugScreenPrintf("Press |`'~X~'`| to start\n");
          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) {
          /* main functions */
          pspDebugScreenInit();
          SetupCallbacks();
          while(true) {
                    /* while loop */
                    nums();
          }
return 0;
}

when I press 'x' it doesnt update the info..

[VaN HeLsInG]

Hey, sup guys? well I need help.
Im trying to change DevHook Launcher font with this guide: Release: FLIB Truetype font library in C
And its always dont working If someone can send me the DevHook Launcher SDK WITH ANY OTHER FONT And tell me where im chaging it again I would be very happy.

[yaustar]

psp12: You have been told this many times:
&& - logical AND
& - Bitwise AND.

Bronx: That link looks VERY illegal.

[Waterbottle]

How can I change which folder cygwin starts in?

for me it starts in 'home/my name'

but I wan't it to start in 'home/myname' tried renaming the my name folder to myname and then changing the name of my xp user to myname instead of my name.
but cygwin just created a new folder still.

[Vaza]

Hey,
Anybody know if normal PC SDL is exactly the same as PSP SDL.
If not, whats the difference?
--Vaza

[Moonchild]

Hey,
Anybody know if normal PC SDL is exactly the same as PSP SDL.
If not, whats the difference?
--Vaza

I believe so, haven't worked that much with it though.

[psphacker12.]

I believe so, haven't worked that much with it though.

hah lol ur not prem anymore

[Access_Denied]

hah lol ur not prem anymore

First of all, why would you laugh at him for not being premium? And second of all, yes he is. He just changed the color of his name.

[Moonchild]

hah lol ur not prem anymore

STFU you n00b.

I am premium, I just changed the color to dark blue.

[psphacker12.]

STFU you n00b.

I am premium, I just changed the color to dark blue.

:Argh: sorry for laughing at you

[Bronx]

Hey,
Anybody know if normal PC SDL is exactly the same as PSP SDL.
If not, whats the difference?
--Vaza

The main differeces I know of is the control mapping and that a lot of SDL is done in software insteado hardware. The control mapping for SDL is all using a 'joystick' instead of buttons. Check out this thread: http://forums.ps2dev.org/viewtopic.p...49c129a3f2328f

@psp12, Homer still has a sig, he HAS to be premium/dev... Use your common sense nd stop spamming the forums

[psphacker12.]

okay I successfully installed the freetype lib
but when I try to compile it gives me this.

[Insert_Witty_Name]

Add flib.o to the OBJS line in your makefile.

You'll probably need graphics.o and framebuffer.o too.

[psphacker12.]

ok i included flib.o graphics.o and framebuffer.o
but it gives me an error with flib

[hallo007]

beter copy and pasta you errors here;) and btw there is something wrong with your flib.o
-= Double Post =-
some prob's

inline void vermenigvuldigen()
{ pspDebugScreenClear();
x=0;
while(1) {
printf("\n\n\n\n\n\n\n je hebt vermenigvuldigen gekozen\n");
if (x>=50) {
printf(" bezig met opstarten");
}
if (x>200) {
printf(",klaar");
}
if (x>250) {
pspDebugScreenClear();
vermenigvuldigenb();
}
}
}

it flips the text(je hebt vermenigvuldigen gekozen) 10.000 times on screen ,lol
and the rest it dont

prob2

i let change the functions by pressing triangle
but when you hold it , it change , change and change , it only ahve to change ones
the prob is
it loads another loop while pressing triangle and in the next loop it does the same , so it continues.....

[psphacker12.]

i posted a pic..
press back on your browser then forward..
that should make the image normal size

[yaustar]

hallo007:

inline void vermenigvuldigen()
{ 
	pspDebugScreenClear();
	x=0;
	while(1) 
	{
		printf("\n\n\n\n\n\n\n je hebt vermenigvuldigen gekozen\n");
		if (x>=50) 
		{
			printf(" bezig met opstarten");
		}
		if (x>200) 
		{
			printf(",klaar");
		}
		if (x>250) 
		{
			pspDebugScreenClear();
			vermenigvuldigenb();
		}
	}
}

Flipping heck... where do I start....
1) You are inlining a function that really doesn't need to be inlined. Don't overuse the inline keyword and avoid premature optimisation.
2) You are using an infinite loop (while(1) ) with no possbile exit condition.
3) x is always going to be 0 before the while loop begins therefore none of the if statements will equal true.

[hallo007]

hallo007:

2) You are using an infinite loop (while(1) ) with no possbile exit condition.
3) x is always going to be 0 before the while loop begins therefore none of the if statements will equal true.

2/it loads another function so why exit?
3/ , how do i let it be true

[psphacker12.]

2/it loads another function so why exit?
3/ , how do i let it be true

put

int x=0;

in your while loop.
-= Double Post =-
Hey i have a question..
In gimp, you can save images as image.c so cant you compile that image within the EBOOT to save memory space??

[Waterbottle]

3/ , how do i let it be true

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

[yaustar]

psp12.: Incorrect

hallo007: It doesn't even load another function since x is always 0 when entering the while loop.
This:

inline void vermenigvuldigen()
{ 
	pspDebugScreenClear();
	x=0;
	while(1) 
	{
		printf("\n\n\n\n\n\n\n je hebt vermenigvuldigen gekozen\n");
		if (x>=50) 
		{
			printf(" bezig met opstarten");
		}
		if (x>200) 
		{
			printf(",klaar");
		}
		if (x>250) 
		{
			pspDebugScreenClear();
			vermenigvuldigenb();
		}
	}
}

Might as well be:

inline void vermenigvuldigen()
{ 
	pspDebugScreenClear();
	x=0;
	while(1) 
	{
		printf("\n\n\n\n\n\n\n je hebt vermenigvuldigen gekozen\n");
	}
}

It won't ever leave the while loop.

[Insert_Witty_Name]

psp12: Your freetype headers are in the wrong directory. They should be in:

usr\local\pspdev\psp\include\freetype

I seem to remember the ps2dev.org SVN putting them in a freetype2 folder or something like that.

Just copy them into the usr\local\pspdev\psp\incl ude\freetype directory.

[Lukeson]

Socket-programming

Hi,
I'm doing some networkprogramming right now; The connecting works fine, but when it comes to the data exchange I'm having some issues; What he shall do is:

1.) Client connects to server (works)
2.) Client sends "<command>get_artists </command>" (works)
3.) Server recieves message and prints it (works)
4.) Client sends "<command>get_albums</command>" (works)
5.) Server recieves message and prints it (works)
6.) Client starts recieving (while-loop) (he starts recieving but never actually recieves something)
7.) Server answers (never sends anything)

Server code:

    if(listen(sock, 5) == -1 )
         error_exit("Error listening");

    printf("Server ready - waiting for requests\n");

    for (;;) {
        len = sizeof(client);	// client = sockaddr_in
        fd = accept(sock, (struct sockaddr*)&client, &len);
        if (fd < 0)
		error_exit("Error accepting");
		
	printf("Incloming request from %s\n", inet_ntoa(client.sin_addr));

		while(rc!=SOCKET_ERROR)
		{
			rc=recv(fd,buf,256,0);
			if(rc==0)
			{
				printf("Client closed the connection...\n");
				break;
			}
			if(rc==SOCKET_ERROR)
			{
				printf("Error: recv, error-code: %d\n",WSAGetLastError());
				break;
			}
			buf[rc]='\0';
			printf("Client sent: %s\n",buf);
		}

		printf("Sending answer...\n");
		sprintf(buf2,"%s\n",buf);
		rc=send(fd,buf2,strlen(buf2),0);

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

Client code:

    command = "<command>get_artists</command>";
    command_len = strlen(command);
    command2 = "<command>get_albums</command>";
    command2_len = strlen(command);

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

	if (send(socket, command2, command2_len, 0) != command_len) {
        printf("send() sent a different length of bytes than expected!\n");		// needs real exceptionhandling
		return;
	}
	printf("sending command get_albums...\n");

	printf("recieving...\n");
	while(rc!=SOCKET_ERROR)
	{
		rc=recv(socket,buf,4096,0);	// muss noch variabel gemacht werden
		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;
		}
		printf("%s\n", buf);
		strcat(recivedMessage, buf);
	}
   close(sock);

what he does is, on the server, recieving and displaying the messages (nothing else), and on the client, he sends the 2 messages, displays 'reciecing and does nothing more