C语言-返回字符的二维数组

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char **create_2d_char_array(int rows, int cols) {
    char **array = (char **)malloc(rows * sizeof(char *));
    for (int i = 0; i < rows; i++) {
        array[i] = (char *)malloc(cols * sizeof(char));
        memset(array[i], '0', cols);
    }
    return array;
}

void free_2d_char_array(char **array, int rows) {
    for (int i = 0; i < rows; i++) {
        free(array[i]);
    }
    free(array);
}

int main() {
    int rows = 3;
    int cols = 4;

    char **array = create_2d_char_array(rows, cols);

    // 使用二维数组
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            printf("%c ", array[i][j]);
        }
        printf("\n");
    }

    // 释放二维数组占用的内存
    free_2d_char_array(array, rows);

    return 0;
}