C and C++ Forum RSS Feed

fatal error: libtcc.h: No such file or directory

Wed, 08 Feb 2012 15:04:24 -0800

Hello,
With C code, I get this error:
fatal error: libtcc.h: No such file or directory

The code includes the library: "#include <libtcc.h>".

Can you tell me what I should do to resolve the error.
Thank you.

fatal error: libtcc.h: No such file or directory

Wed, 08 Feb 2012 14:56:53 -0800

Help needed urgently regarding c++ or java programming !!!

Wed, 08 Feb 2012 01:07:29 -0800

Hey guys I have one programming assignment deadline on Feb 19th ..!! I am very bad at programming and I need your help!! Please anyone can come for a solution for my assignment??? I will be thankful to you very much !! Have a look at attached file for my programming assignment details !! It says that I need to develop a file sharing program like bit torrent with certain specifications ! please help guys !! Thanks for all your help in advance !!!

Attachment: prog1_new.pdf (43932 bytes | downloaded 5 times)

dev c/c++: C Sample code to turn on/off pixel in window and...

Mon, 06 Feb 2012 11:40:33 -0800

Hi!

In c language using dev c/c++ (dont ask why, thats the enviroment I know well)

I want a sample code to create window and turn on off pixel. I want it to be as much as simple (with explanations if possible) and small the code.

Also how to read a key and how to make the whole program run in desktop's background as overlay (like winamp's avs visualizations, check how simple and fast it is; i think it access ONLY the bitmap of the image being displayed or something like this..)

Also, where can I find a manual for the windows.h commands?

Please Help me

Sun, 05 Feb 2012 15:17:47 -0800

Please help me.
I need to create a Rat Race with Cheat.
and the codes are limited to "do,if,while,for" please check my codes and can someone fix it? xD

This is just an easy problem for you guys so please do help me i need to pass this to my teacher this afternood i have 5 hours left

The Said cheat is when the race start and in the middle of the race the
user will press a number from 1-15 the number that's been pressed will win the race and if the user decided to change the winner he will press a number again.
the race is from X 10-70 lines

#include<stdio.h>
#include<conio.h>
#include<dos.h>
#include<stdlib.h>
#include<time.h>

int main()
{
clrscr();
int rats, numrats, go, key, x, y, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15;
char c;
r1=r2=r3=r4=r5=r6=r7=r8=r9=r10=r11=r12=r13=r14=r15 =1;
textmode(2);
rats=1;
x=1;
go=5;
clrscr();
gotoxy(1,16);
printf("%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c %c%c%c%c%c%c%c%c%c%c%c\n",201,205,205,205,205,205, 205,205,205,205,205,205,205,205,205,205,205,205,20 5,205,205,205,205,205,205,205,205,205,205,205,205, 187);
printf("%c Welcome to rat race of Awtz! %c\n",186,186);
printf("%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c %c%c%c%c%c%c%c%c%c%c%c\n",200,205,205,205,205,205, 205,205,205,205,205,205,205,205,205,205,205,205,20 5,205,205,205,205,205,205,205,205,205,205,205,205, 188);
getch();
printf("Enter number of rats:");
scanf("%d",&numrats);
while (numrats<10||numrats>15)
{
printf("Enter a number within 10-15 (to start the race):");
scanf("%d",&numrats);
}
clrscr();
for(numrats;rats<=numrats;rats++)
{
delay(200);
printf("%2d %8s\n\a",rats,">");
}
gotoxy(1,16);
printf("Start? <Y/N>\n");
c=getch();
kbhit();
if(c==89||c==121)
{
for(go;go>=1;go--)
{
delay(500);
printf("\n%d\a",go);
}
delay(1000);
printf("\nGO !!!");
}
else
{
if(c==78||c==110)
{
printf("Okay. just press Y if you want to start the race\n");
c=getch();
kbhit();
if(c==89||c==121)
{
for(go;go>=1;go--)
{
delay(500);
printf("\n%d\a",go);
}
printf("\nGO !!!");
}
}
}
while(x!=70)
{
if(x<70)
{
y=random(rats);
{
if(y==1)
{
x=r1;
r1++;
}
if(y==2)
{
x=r2;
r2++;
}
if(y==3)
{
x=r3;
r3++;
}
if(y==4)
{
x=r4;
r4++;
}
if(y==5)
{
x=r5;
r5++;
}
if(y==6)
{
x=r6;
r6++;
}
if(y==7)
{
x=r7;
r7++;
}
if(y==8)
{
x=r8;
r8++;
}
if(y==9)
{
x=r9;
r9++;
}
if(y==10)
{
x=r10;
r10++;
}
if(y==11)
{
x=r11;
r11++;
}
if(y==12)
{
x=r12;
r12++;
}
if(y==13)
{
x=r13;
r13++;
}
if(y==14)
{
x=r14;
r14++;
}
else
{
x=r15;
r15++;
}
delay(500);
gotoxy(x,y);
printf(">");
}
}
}
getch();
return 0;
}

Angle between 2 3d vectors

Sun, 05 Feb 2012 14:27:59 -0800

Hi,

Im after getting help on finding the signed angle between 2 3d vectors.

i have 2 vectors that can rotate, i want to get the angle from vector 1 to vector 2 taking into account the rotation of the vector.

i have this robot which spins the top half of its body, if its not facing the other vector i need the angle to make this top body part rotate to face the other vector.

ive scoured the internet for days however everything i have tried has failed.

can anyone help with this.

Angle between 2 3d vectors

Sun, 05 Feb 2012 14:26:08 -0800

help for recognition solution

Sun, 05 Feb 2012 07:01:34 -0800

which type of algorithm is better to solve this task:

i have an"image" presented in ASCII text, where "." is white color, "%" is light grey, "#" is dark grey and "@" is black. And image shows some numbers like 545, 839, 901, 834 and so on, every combination of hundreds numbers.

And i need to find what number is drown on text file via symbols above.

You can see an example on attachment.

Regards.

Attachment: example_numbers.rar (239 bytes | downloaded 5 times)

help for recognition solution

Sun, 05 Feb 2012 06:57:22 -0800

recognition algorithm

Sun, 05 Feb 2012 06:52:46 -0800

recognition algorithm

Sun, 05 Feb 2012 06:48:31 -0800

Odd compilation errors

Fri, 27 Jan 2012 10:40:45 -0800

Hi folks,
I am having some problems with a code listing my lecturer sent me to work on. The keyboard function is throwing two errors on compilation.
arrors are
1>main.cpp(77) : error C2143: syntax error : missing ';' before 'constant'
1>main.cpp(77) : error C2106: '=' : left operand must be l-value

the line that appears to be causing the error is in the following function, highlighted in red.

void keyboard(unsigned char key, int x, int y)
{
const unsigned char VK_ESCAPE=0x1b;
switch (key) {
case 'r': // Red
glColor3f(1.0, 0.0, 0.0);
break;
case 'g': // Green
glColor3f(0.0, 1.0, 0.0);
break;
case 'b': // Blue
glColor3f(0.0, 0.0, 1.0);
break;
case 'k': // Black
glColor3f(0.0, 0.0, 0.0);
break;
// Extra statements added to change the background colour...
case 'R': // Red background
glClearColor(1, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
break;
case 'G': // Green background
glClearColor(0, 1, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
break;
case 'B': // Blue background
glClearColor(0, 0, 1, 1);
glClear(GL_COLOR_BUFFER_BIT);
break;
// Extra key handlers for line width...
case '1':
glLineWidth(1);
break;
case '2':
glLineWidth(2);
break;
case '3':
glLineWidth(3);
break;
case '4':
glLineWidth(4);
break;
case '5':
glLineWidth(5);
break;
case '6':
glLineWidth(6);
break;
case VK_ESCAPE: // Quit – the Esc key.
exit(0);
break;
default:
// could do stuff here also
break;
}
}

As I stated, my lecturer states that this code works fine, but I am having no luck. Any ideas?

Odd compilation errors

Fri, 27 Jan 2012 10:37:48 -0800

sizeof(struct) doens'nt match inside total size

Fri, 27 Jan 2012 08:07:04 -0800

Hello,

I usually develop in C for embedded platform (mplab C18 from microchip) and I use very often struct.

I began to work on a project on a PC and I encounter one weird behavior which I don't understand :

1st, when I do the sizeof(short, long, int and char) I get :

short : 2
long : 8
int : 4
char : 1

In the following struct, the total size from (sizeof) is 6 but if I do the sum of the size of the differents elements, it should sum 5.

typedef struct _test
{
	unsigned char a;
	unsigned short b; // 2 bytes
	unsigned char c : 4;
	unsigned char d : 4;
	unsigned char e : 2;
	unsigned char f : 6;
}test;

so:

a = 1 byte
b = 2 bytes
c + d = 1 byte
e + f = 1 byte

Why do the compiler add an empty byte somewhere ? At first, I though it was because the structs must be 2 bytes aligned but the following struct works fine :

typedef struct _test2
{
  unsigned char a;
  unsigned char b;
  unsigned char c;
}test2;

the sizeof gives me 3 bytes which is right.

If I only put 1 short in the structure, the structure is sized 2 bytes. but if I add an unsigned char, the size is not right...

I can't understand whis this behavior and How to bypass this ?

Thank you for your help !

sizeof(struct) doens'nt match inside total size

Fri, 27 Jan 2012 08:04:53 -0800

typedef struct _test
{
	unsigned char a;
	unsigned short b; // 2 bytes
	unsigned char c : 4;
	unsigned char d : 4;
	unsigned char e : 2;
	unsigned char f : 6;
}test;

typedef struct _test2
{
  unsigned char a;
  unsigned char b;
  unsigned char c;
}test2;

the sizeof gives me 3 bytes which is right.

combine 4 bytes into a 32 bit number

Wed, 25 Jan 2012 20:56:42 -0800

I have 4 numbers:b1 b2 b3 b4 (b1 is MSB, b4 is LSB) and I want to combine them into one number of 32-bit as b1b2b3b4;tried the following but didn't work (i guess overflow):

res = (unsigned long)((b4 & 0xFF) | (((unsigned long)(b3<<8)) & 0xFF00));
res = (unsigned long)(res | (((unsigned long)(b2<<16)) & 0xFF0000));
res = (unsigned long)(res |(((unsigned long)(b1<<24)) & 0xFF000000));

b1 = 86; b2 = 120; b3 = 154; b4 = 188;
result should be : 1450744508 in decimal or 56789abc in hex

combine 4 bytes into a 32 bit number

Wed, 25 Jan 2012 20:54:51 -0800

BCC++ in DOS int86x string length

Sun, 22 Jan 2012 07:05:15 -0800

This is my first post here. I will ask my question in the next post if this goes through. The previous attempt failed. See ya.

Event Handler in C++

Sun, 22 Jan 2012 06:41:18 -0800

Hey,
I am trying to create a game which requires the use of keyboard.The game is about falling items and I have to collect the item using the paddle .So I know that we can make the terminal to operate in raw mode and make the paddle move using the keyboard input.But i am not sure if it will work as efficiently as an event handler works in other languages.
Is there any way that we can make it look like a REAL time event?

Event Handler in C++

Sun, 22 Jan 2012 06:38:23 -0800

Problem Writing To File (Dev C++ Compiler 4.9.9.2)

Wed, 18 Jan 2012 20:38:26 -0800

Hello all,
I am trying to complete a summative programming for my grade 11 programming class and appear to be having some troubles when writing to file. Any help is appreciated.
Code:

int high_scores(string name, int points)
{
    int x, y, linecount, score[10], tick;
    string names[10];
    fstream WJ_names, WJ_points;
    WJ_names.open("WJ_Names.txt");
    WJ_points.open("WJ_Points.txt");
    for (x = 0; x <= 9; x++)
    {
        linecount = x;
        WJ_points >> score[x];
        WJ_points << "";
        WJ_names >> names[x];
        WJ_names << "";
        cout << names[x] << endl;
        cout << score[x] << endl;
        }
    y = 0;
    system("Pause");
    cout << "----------------------------\n";
    do
    {
        if (points > score[y])
        {
                   score[y] = points;
                   names[y] = name;
                   tick = 1;
                   }
        y++;
        }while(tick == 0);
    for (x = 0; x <= 9; x++)
    {
        linecount = x;
        WJ_points << score[x];
        WJ_names << names[x];
        cout << names[x] << endl;
        cout << score[x] << endl;
        }
    WJ_points.close();
    WJ_names.close();
    return(0);
}

The reason why I don't really see a problem is because wouldn't declaring the variables in "fstream" make it possible to write and read from file? The main problem is whats meant to happen is the user enters their name and the name is added to the "highscores" text file along with the "score/points". But when I try to write to file, the file is the same as it was before (Without the new name added on)

All help is appreciated. :)

Problem Writing To File (Dev C++ Compiler 4.9.9.2)

Wed, 18 Jan 2012 20:36:36 -0800

Hello all,
I am trying to complete a summative programming for my grade 11 programming class and appear to be having some troubles when writing to file. Any help is appreciated.
Code:

int high_scores(string name, int points)
{
    int x, y, linecount, score[10], tick;
    string names[10];
    fstream WJ_names, WJ_points;
    WJ_names.open("WJ_Names.txt");
    WJ_points.open("WJ_Points.txt");
    for (x = 0; x <= 9; x++)
    {
        linecount = x;
        WJ_points >> score[x];
        WJ_points << "";
        WJ_names >> names[x];
        WJ_names << "";
        cout << names[x] << endl;
        cout << score[x] << endl;
        }
    y = 0;
    system("Pause");
    cout << "----------------------------\n";
    do
    {
        if (points > score[y])
        {
                   score[y] = points;
                   names[y] = name;
                   tick = 1;
                   }
        y++;
        }while(tick == 0);
    for (x = 0; x <= 9; x++)
    {
        linecount = x;
        WJ_points << score[x];
        WJ_names << names[x];
        cout << names[x] << endl;
        cout << score[x] << endl;
        }
    WJ_points.close();
    WJ_names.close();
    return(0);
}

Please help me..

Tue, 17 Jan 2012 23:28:02 -0800

I really want to seek help on the codes of this program. It's a multitasking using c++6. It can be found here. http://impactnetworking.net/c1/ch18.htm
Please if anyone knows how to modify and find out what's wrong with the codes, please help me. I have already tried it but it has some errors and i do not know how to solve it.

How to Input to Program.

Sat, 14 Jan 2012 05:08:53 -0800

Hello All: This is my second C++ program. I'm trying to understand "cin". I run this program, it tells me what to do, I do it, hit enter, and the screen goes away. I don't know why. Please help. I am using Vista, IE7, Dev-C++.

#include <iostream>
#include <string>

using namespace std;

int main()
{
    string firstName;
    string lastName;
    int age;
    double weight;
    cout << "Enter first name, last name, age, "
    << "and weight, separated by spaces."
    << endl;
    cin >> firstName >> lastName;
    cin >> age >> weight;
    
    cout << "Age: " << age << endl;
    cout << "Weight: " << weight << endl;
       getchar ();           

    return 0;
     
}

confusion regarding functions

Wed, 11 Jan 2012 02:43:01 -0800

hi everyone!!!
I am new to c language,
can anyone tell me when to use which type of funtion in the program
.I always confuse about that.PLEASE HELP!!