c语言二维数组逆时针旋转90c

以下是C语言中二维数组逆时针旋转90度的代码实现：

#include <stdio.h>

#define ROW 3
#define COL 3

void rotate(int arr[][COL], int row, int col) {
    int temp[row][col];
    for (int i = 0; i < row; i++) {
        for (int j = 0; j < col; j++) {
            temp[i][j] = arr[i][j];
        }
    }
    for (int i = 0; i < row; i++) {
        for (int j = 0; j < col; j++) {
            arr[i][j] = temp[j][row - i - 1];
        }
    }
}

int main() {
    int arr[ROW][COL] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
    printf("Original array:\n");
    for (int i = 0; i < ROW; i++) {
        for (int j = 0; j < COL; j++) {
            printf("%d ", arr[i][j]);
        }
        printf("\n");
    }
    rotate(arr, ROW, COL);
    printf("Rotated array:\n");
    for (int i = 0; i < ROW; i++) {
        for (int j = 0; j < COL; j++) {
            printf("%d ", arr[i][j]);
        }
        printf("\n");
    }
    return 0;
}

运行结果如下：

Original array:
1 2 3 
4 5 6 
7 8 9 
Rotated array:
3 6 9 
2 5 8 
1 4 7