用c语言输出九九乘法表要求输出三列，输出格式为輸出格式 : 1X1 = 1 2X1 = 2 3X1 = 3 1X2 = 2 2X2 = 4 3X2 = 6 … … … 1X9 = 9 2X9 = 18 3X9 = 27

好的，下面是C语言代码实现九九乘法表，输出格式为每列三个的形式：

#include <stdio.h>

int main() {
    int i, j;
    for (i = 1; i <= 9; i++) {
        for (j = 1; j <= 3; j++) {
            printf("%dX%d = %-2d  ", j, i, i*j);
        }
        printf("\n");
        if (i % 3 == 0) {
            printf("\n");
        }
    }
    return 0;
}

输出结果为：

1X1 = 1    2X1 = 2    3X1 = 3    
1X2 = 2    2X2 = 4    3X2 = 6    
1X3 = 3    2X3 = 6    3X3 = 9    

1X4 = 4    2X4 = 8    3X4 = 12   
1X5 = 5    2X5 = 10   3X5 = 15   
1X6 = 6    2X6 = 12   3X6 = 18   

1X7 = 7    2X7 = 14   3X7 = 21   
1X8 = 8    2X8 = 16   3X8 = 24   
1X9 = 9    2X9 = 18   3X9 = 27   

希望能帮到你！

相关问题

用c语言输出九九乘法表要求输出三列，输出格式为輸出格式 1X1 = 1 2X1 = 2 3X1 = 3 1X2 = 2 2X2 = 4 3X2 = 6 … … … 1X9 = 9 2X9 = 18 3X9 = 27 4X1 = 4 5X1 = 5 6X1 = 6 4X2 = 8 5X2 = 10 6X2 = 12 … … … 4X9 = 36 5X9 = 45 6X9 = 72 7X1 = 7 8X1 = 8 9X1 = 9 … … … 7X9 = 63 8X9 = 72 9X9 = 81

好的，以下是用 C 语言输出九九乘法表的代码：

#include <stdio.h>

int main() {
    int i, j, k;

    for (i = 1; i <= 9; i += 3) {
        for (j = 1; j <= 9; j++) {
            for (k = i; k < i + 3; k++) {
                printf("%dX%d = %-3d ", k, j, k * j);
            }
            printf("\n");
        }
        printf("\n");
    }

    return 0;
}

输出结果为：

1X1 = 1   2X1 = 2   3X1 = 3   
1X2 = 2   2X2 = 4   3X2 = 6   
1X3 = 3   2X3 = 6   3X3 = 9   
1X4 = 4   2X4 = 8   3X4 = 12  
1X5 = 5   2X5 = 10  3X5 = 15  
1X6 = 6   2X6 = 12  3X6 = 18  
1X7 = 7   2X7 = 14  3X7 = 21  
1X8 = 8   2X8 = 16  3X8 = 24  
1X9 = 9   2X9 = 18  3X9 = 27  

4X1 = 4   5X1 = 5   6X1 = 6   
4X2 = 8   5X2 = 10  6X2 = 12  
4X3 = 12  5X3 = 15  6X3 = 18  
4X4 = 16  5X4 = 20  6X4 = 24  
4X5 = 20  5X5 = 25  6X5 = 30  
4X6 = 24  5X6 = 30  6X6 = 36  
4X7 = 28  5X7 = 35  6X7 = 42  
4X8 = 32  5X8 = 40  6X8 = 48  
4X9 = 36  5X9 = 45  6X9 = 54  

7X1 = 7   8X1 = 8   9X1 = 9   
7X2 = 14  8X2 = 16  9X2 = 18  
7X3 = 21  8X3 = 24  9X3 = 27  
7X4 = 28  8X4 = 32  9X4 = 36  
7X5 = 35  8X5 = 40  9X5 = 45  
7X6 = 42  8X6 = 48  9X6 = 54  
7X7 = 49  8X7 = 56  9X7 = 63  
7X8 = 56  8X8 = 64  9X8 = 72  
7X9 = 63  8X9 = 72  9X9 = 81  

希望能对您有所帮助！

要求从键盘输入两个点的坐标 x1、y1、x2、y2，然后输出它们之间的距离的C语言

以下是计算两个点之间距离的C语言程序：

#include <stdio.h>
#include <math.h>

int main() {
    double x1, y1, x2, y2, distance;
    printf("Enter the coordinates of the first point (x1, y1): ");
    scanf("%lf %lf", &x1, &y1);
    printf("Enter the coordinates of the second point (x2, y2): ");
    scanf("%lf %lf", &x2, &y2);
    distance = sqrt(pow((x2-x1), 2) + pow((y2-y1), 2));
    printf("The distance between the two points is: %lf\n", distance);
    return 0;
}

程序要求用户输入两个点的坐标，然后使用数学库函数`sqrt()`和`pow()`计算两个点之间的距离，并输出结果。