How to use a two-dimensional array in C language to output a multiplication table of the nine times table.

To generate the multiplication table for 9×9, you can utilize a two-dimensional array to store each result, then use nested loops to iterate through the array and output the results.

Here is an example code written in the C language:

#include <stdio.h>

int main() {
    int table[9][9];

    // 生成九九乘法表
    for (int i = 0; i < 9; i++) {
        for (int j = 0; j < 9; j++) {
            table[i][j] = (i + 1) * (j + 1);
        }
    }

    // 输出九九乘法表
    for (int i = 0; i < 9; i++) {
        for (int j = 0; j < 9; j++) {
            printf("%3d ", table[i][j]);
        }
        printf("\n");
    }

    return 0;
}

Running the code above will output the following multiplication table.

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