/* A program to convert five names from first-name, last-name
   format into last-name comma first-initial format. */
#include <stdio.h>

main () {
    char first_name[41], last_name[41];
    int counter;     /* To count the five iterations of the loop */

    /* Loop five times, one name each time */
    for (counter = 0; counter < 5 ; counter ++) {
        /* Input a name */
        scanf("%40s%40s", first_name, last_name);
        /* Output it rearranged */
        printf("%s, %.1s\n", last_name, first_name);
    }
}