A função rand

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

int main(int argc, char *argv[]) {
    system("title A função rand");
    
    int i ;
    for(i=1; i<=20; i++) {
        printf("%10d", 1 + (rand() % 6));
        if(i % 5 == 0) {
            printf("\n");
        }
    }

    getchar();
    return 0;
}