abhijit

• Jun 27th, 2005

 

can i get the ans fr the question 
Question : How do you write a program which produces its own source code as its output?

Anjaneyulu

• Jul 16th, 2005

 

/* Program to printf itself on console */ 
#include  
int main(void) 
{ 
FILE *in; 
clrscr(); 
if ((in = fopen("8.c", "r")) == NULL) 
{ 
printf("Cannot open input file.n"); 
return 1; 
} 
while (!feof(in)) 
printf("%c", fgetc(in)); 
fclose(in); 
getche(); 
return 0; 
} 

venu

• Jul 16th, 2005

 

answer 

suhasini

• Jul 27th, 2005

 

Howdoes return1 and return 0 differ?

Santhanam

• Sep 3rd, 2005

 

'return 0' indicates program is ended with no error and 'return 1' indicates program is ended with error.

Harish Kumar

• Sep 12th, 2005

 

#include<stdio.h> 
#include<string.h>
#include<stdlib.h>
int main(int args,char **argv)
{
char filename[20];
int i=0,k=0;
FILE *in;

while(argv[0][i] != '\0')
if(argv[0][i++] == '\\')
k=i;
printf("%d",k);
for(i=0;argv[0][k] != '.';i++,k++)
{
filename[i] = argv[0][k];
}

filename[i] = '\0';
strcat(filename,".c");

if ((in = fopen(filename, "r")) == NULL)
{
printf("Cannot open input file.n");
return 1;
}
while (!feof(in))
printf("%c", fgetc(in));
fclose(in);
return 0;
}

Sudhakar

• Oct 10th, 2005

 

main() { char *a="main() { char *a=%c%s%c; char b='%c'; printf(a,b,a,b,b); }"; char b='"'; printf(a,b,a,b,b); }

wasim

• Jul 21st, 2006

 

#include<>

main()

{

         FILE *p;

             p=fopen("filename","r");

             if(p==null)exit(1);

       while(!eof(p))

     {

            printf("%c",*p);

               p++;

      }

getche();

}

Guest

• Aug 3rd, 2006

 

Hi,

  There are So many complex methods for that but i write the most effective and simple one  just write this ..

// program name avi.c

#include<stdlib.h>

void main()

{ //// write ur program logic here

getch();

system("type avi.c");

}

by the use of this system function from stdlib.h u can run any dos command from ur c program but please check the output for this only by running the exe of ur program ( in this case avi.exe)

Regards ,

Avinash Chaturvedi( Avi )

Manoj

• Mar 14th, 2007

 

All the solutions above are reading the source code with the files concepts.

find a solution where you do not have a source file to read the contents.

There is a macro or an attiribute which tells the compiler the name of the program, function or the attribute. You can use that to get the source code. try out...!!!

praveensaini23

 Profile Answers by praveensaini23 

• Jun 28th, 2010

 

#include <stdio.h>

int main()

{

char ch;

FILE *file;

file=fopen("printitself.c","r");

while((ch=fgetc(file))!=EOF)

printf("%c",ch);

return 0;

}