C/C++ program that prints its own source code as its output

Question

Wikipedia says it\'s called a quine and someone gave the code below:

char*s=\"char*s=%c%s%c;main(){printf(s,34,s,34);}\";main(){printf(s,34,s,34);}
         


        

Answer 1

#include

int main(void)
{
    char a[20],ch;
    FILE *fp;
    // __FILE__ Macro will store File Name to the array a[20]
    sprintf(a,__FILE__);  
    // Opening the file in Read mode 
    fp=fopen(a,"r");      
    // Taking character by character from file, 
    // you can also use fgets() to take line by line
    while((ch=fgetc(fp))!=EOF)  
    printf("%c",ch);
    return 0;
}