coverage test

cov_test.c

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

void usage(char *cmd)
{
    fprintf(stderr, "%s: you need to pass arguments at least 1\n", cmd);
    return;
}

int main(int argc, char **argv)
{
    if (argc < 2) {
        usage(argv[0]);
        exit(EXIT_FAILURE);
    }

    switch (argc) {
        case 2:
            printf("you passed 1 argument\n");
            break;
        case 3:
            printf("you passed 2 arguments\n");
            break;
        default:
            printf("you passed more than 3 arguments\n");
            break;
    }
    return EXIT_SUCCESS;
}