bang_cuu_chuong

#include <stdio.h>

#define width 10

int main()
{
    int n;
    printf("N = ");
    scanf("%d", &n);

    for (int i = 1; i <= 10; ++i)
    {
        for (int j = 1; j <= n; ++j)
        {
            if (i != 10) printf("%d x %d = %-*d", i, j, width, i * j);
            else printf("%d x %d = %-*d", i, j, width - 1, i * j);
        }
        printf("\n");
    }
}