使用objective-c，分别用for循环和while循环打印九九乘法表，并将乘法以三角形的形式输出

以下是使用 Objective-C 语言分别用 for 循环和 while 循环打印九九乘法表，并将乘法以三角形的形式输出的代码：

使用 for 循环：

for (int i = 1; i <= 9; i++) {
    for (int j = 1; j <= i; j++) {
        printf("%d x %d = %-2d  ", j, i, i * j);
    }
    printf("\n");
}

使用 while 循环：

int i = 1;
while (i <= 9) {
    int j = 1;
    while (j <= i) {
        printf("%d x %d = %-2d  ", j, i, i * j);
        j++;
    }
    printf("\n");
    i++;
}

输出的结果如下：

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  

希望能够帮助到你！