/**
 * Program to calculate sequence of random numbers and count result of
 * computing, for each of them, remainder when divided by selected value.
 */
#include <stdio.h>
#include <stdlib.h>

int main(void) {

    int how_many;
    int divisor;
    int num;

    printf("how many numbers?\n");
    if (scanf("%d", &how_many) != 1) {
        printf("invalid\n");
        return EXIT_FAILURE;
    }
    printf("divisor (> 0)?\n");
    if ((scanf("%d", &divisor) != 1) || (divisor <= 0)) {
        printf("invalid\n");
        return EXIT_FAILURE;
    }

    int remainders[divisor];
    for (int i = 0; i < divisor; ++i) {
        remainders[i] = 0;
    }

    for (int i = 0; i < how_many; ++i) {
        num = rand();
        remainders[num % divisor] += 1;
    }

    for (int i = 0; i < divisor; ++i) {
        printf("%d with remainder %d\n", remainders[i], i);
    }

    return EXIT_SUCCESS;
}