/**********************************************************************
*                                                                     *
* Public domain code by Rowan Crowe, 3:635/727.1{at}fidonet              *
*                                    rowan{at}jelly.freeway.DIALix.oz.au *
*                                                                     *
* Demonstration of how to use isleapyear()                            *
*                                                                     *
**********************************************************************/

#include 
#include 

extern int isleapyear(int year);

int main(int argc, char *argv[]) {
    int x;
    if (argv[1] == NULL) {
       printf("\nUsage:\n  %s \n", argv[0]);
       return(0);
    }
    printf("\nThe year %s is ", argv[1]);
    x = isleapyear(atoi(argv[1]));
    if (x == 0) printf("NOT a leap year");
      else
        printf("a leap year");
    return(0);
}

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