變形乘法表

multiplication.c

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

int main() {
    int length, n;

    scanf("%d %d", &length, &n);

    for (int i = 1; i <= n; i += length) {
        printf("\n");

        for (int j = 1; j <= 9; j++) {
            // 每列 length 行，但總數不得超過 n 個
            for (int col = 0; (col < length) && (i + col <= n); col++) {
                printf("%2d * %d  ", i + col, j);
            }
            printf("\n");
        }
    }
}