#include <stdio.h>
#include <stdlib.h>

main(argc, argv)
char **argv;
{
    int c, n;
    char *s;

    n = 0;
    if(argc < 2) {
        printf("arg count\n");
        exit(0);
    }
    s = argv[1];
    while(c = *s++) {
        if(c<'0' || c>'9') {
            printf("bad character\n");
            exit(0);
        }
        n = n*10 + c - '0';
    }
    sleep(n);
}
