#include <stdio.h>   
#include <conio.h>
 
int main(void)   
{  
    int j;  
    char filename[]="file.a";  
    FILE *fp;  
    for ( ; filename[5] <= 'z'; filename[5]++)   
    {   
         fp = fopen(filename, "w");  
         fprintf(fp, "Something\n");               
         fclose(fp);  
    }  
    return 0;   
}