#include "stdio.h"

main()
{
char big[25];

    printf("Input a character string, up to 25 characters.\n");
    printf("An X in column 1 causes the program to stop.\n");

    do {
       scanf("%s",big);
       printf("The string is -> %s\n",big);
    } while (big[0] != 'X');

    printf("End of program.\n");
}