C语言生成9×9乘法表

下面是用C语言生成9x9乘法表的代码：

#include <stdio.h>

int main() {
    int i, j, result;
    for (i = 1; i <= 9; i++) {
        for (j = 1; j <= i; j++) {
            result = i * j;
            printf("%d * %d = %-2d  ", j, i, result); // 使用 %-2d 格式化输出，保持格式整齐
        }
        printf("\n");
    }
    return 0;
}

输出结果如下：

1 * 1 = 1   
1 * 2 = 2   2 * 2 = 4   
1 * 3 = 3   2 * 3 = 6   3 * 3 = 9   
1 * 4 = 4   2 * 4 = 8   3 * 4 = 12  4 * 4 = 16  
1 * 5 = 5   2 * 5 = 10  3 * 5 = 15  4 * 5 = 20  5 * 5 = 25  
1 * 6 = 6   2 * 6 = 12  3 * 6 = 18  4 * 6 = 24  5 * 6 = 30  6 * 6 = 36  
1 * 7 = 7   2 * 7 = 14  3 * 7 = 21  4 * 7 = 28  5 * 7 = 35  6 * 7 = 42  7 * 7 = 49  
1 * 8 = 8   2 * 8 = 16  3 * 8 = 24  4 * 8 = 32  5 * 8 = 40  6 * 8 = 48  7 * 8 = 56  8 * 8 = 64  
1 * 9 = 9   2 * 9 = 18  3 * 9 = 27  4 * 9 = 36  5 * 9 = 45  6 * 9 = 54  7 * 9 = 63  8 * 9 = 72  9 * 9 = 81