how does this program work?

[khajeddin]

this program print its own source code without opening the source file.
would some one please explain me how does it work ,and what what process takes place in this program????

#include <stdio.h>
char *program = "#include <stdio.h>%cchar *program = %c%s%c;%cint main()%c{%c%cprintf(program, 10, 34, program, 34, 10, 10, 10, 9, 10, 9, 10, 10,10);%c%creturn 0;%c}%c";
int main()
{
printf(program, 10, 34, program, 34, 10, 10, 10, 9, 10, 9, 10, 10,10);
return 0;
}

[Ganon11]

This program is simply outputting the code. It will only output this code, so if you add any statements to it, it will not print the exact code anymore. All that is being used is simple output statements. It just happens to print the strings that you typed in to make source code.

[khajeddin]

This program is simply outputting the code. It will only output this code, so if you add any statements to it, it will not print the exact code anymore. All that is being used is simple output statements. It just happens to print the strings that you typed in to make source code.

well i knew that it print its own code But what i want to know is :
is it a recursive fuction in the first line and what is its ending condition(order).
becuase we see while with no condition: while( );
i want to explain all the things has writen in the code please, PLEASE.....

[Ganon11]

There is no recursive function, or loop, or anything. The program makes a character array that represents the code, and then prints that character array. There's nothing complicated here.

[r035198x]

well i knew that it print its own code But what i want to know is :
is it a recursive fuction in the first line and what is its ending condition(order).
becuase we see while with no condition: while( );
i want to explain all the things has writen in the code please, PLEASE.....

I don't see any while in this program. What do you mean by "we see a while with no condition"?

[khajeddin]

I don't see any while in this program. What do you mean by "we see a while with no condition"?

oops!
it seems i had a BIG mistake!
but i still want some explain about the second line (and what does variable *p do).
and also why function printf(""); in the main function doesn't have any argument??????

[r035198x]

oops!
it seems i had a BIG mistake!
but i still want some explain about the second line (and what does variable *p do).
and also why function printf(""); in the main function doesn't have any argument??????

Maybe you should re-read the tutorials again. Make sure you understand what an argument is and what *p means etc