C语言-----打印乘法口诀|| 金字塔||直角三角形

你的名字 2022-08-27 15:55 176阅读 0赞

for (int i = 1; i < 10 ; i++) {    //控制外层循环,
            for (int j = 1; j <= i; j++) {   //控制内层循环
               printf("%d x %d = %2d ", i, j, i * j);
                                                     
            }
            printf("\n");
        }</span>

打印结果为

**1 x 1 =  1 **

**2 x 1 =  2 2 x 2 =  4 **

**3 x 1 =  3 3 x 2 =  6 3 x 3 =  9 **

**4 x 1 =  4 4 x 2 =  8 4 x 3 = 12 4 x 4 = 16 **

**5 x 1 =  5 5 x 2 = 10 5 x 3 = 15 5 x 4 = 20 5 x 5 = 25 **

**6 x 1 =  6 6 x 2 = 12 6 x 3 = 18 6 x 4 = 24 6 x 5 = 30 6 x 6 = 36 **

**7 x 1 =  7 7 x 2 = 14 7 x 3 = 21 7 x 4 = 28 7 x 5 = 35 7 x 6 = 42 7 x 7 = 49 **

**8 x 1 =  8 8 x 2 = 16 8 x 3 = 24 8 x 4 = 32 8 x 5 = 40 8 x 6 = 48 8 x 7 = 56 8 x 8 = 64 **

**9 x 1 =  9 9 x 2 = 18 9 x 3 = 27 9 x 4 = 36 9 x 5 = 45 9 x 6 = 54 9 x 7 = 63 9 x 8 = 72 9 x 9 = 81**

**控制输出的顺序,造成不同的打印结果**

for (int i = 1; i < 10 ; i++) {    //控制外层循环,
            for (int j = 1; j <= i; j++) {   //控制内层循环
               printf("%d x %d = %2d ", j, i, i * j);
                                                     
            }
            printf("\n");
        }

打印结果为:

**1 x 1 =  1 **

**1 x 2 =  2 2 x 2 =  4 **

**1 x 3 =  3 2 x 3 =  6 3 x 3 =  9 **

**1 x 4 =  4 2 x 4 =  8 3 x 4 = 12 4 x 4 = 16 **

**1 x 5 =  5 2 x 5 = 10 3 x 5 = 15 4 x 5 = 20 5 x 5 = 25 **

**1 x 6 =  6 2 x 6 = 12 3 x 6 = 18 4 x 6 = 24 5 x 6 = 30 6 x 6 = 36 **

**1 x 7 =  7 2 x 7 = 14 3 x 7 = 21 4 x 7 = 28 5 x 7 = 35 6 x 7 = 42 7 x 7 = 49 **

**1 x 8 =  8 2 x 8 = 16 3 x 8 = 24 4 x 8 = 32 5 x 8 = 40 6 x 8 = 48 7 x 8 = 56 8 x 8 = 64 **

**1 x 9 =  9 2 x 9 = 18 3 x 9 = 27 4 x 9 = 36 5 x 9 = 45 6 x 9 = 54 7 x 9 = 63 8 x 9 = 72 9 x 9 = 81**