Chatgpt校正版：

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

double** allocateMatrix(int rows, int cols) {
    double **matrix = (double**) calloc(rows, sizeof(double*));
    if (!matrix) {
        printf("Memory allocation failed.\n");
        return NULL;
    }

    for (int i = 0; i < rows; i++) {
        matrix[i] = (double*) calloc(cols, sizeof(double));
        if (!matrix[i]) {
            printf("Memory allocation failed.\n");
            while (i-- > 0) {
                free(matrix[i]);
            }
            free(matrix);
            return NULL;
        }
    }

    return matrix;
}

void freeMatrix(double** matrix, int rows) {
    for (int i = 0; i < rows; i++) {
        free(matrix[i]);
    }
    free(matrix);
}

double** transposeMatrix(double **matrix, int rows, int cols) {
    double **transposed = allocateMatrix(cols, rows);
    if (!transposed) return NULL;

    for (int i = 0; i < cols; i++) {
        for (int j = 0; j < rows; j++) {
            transposed[i][j] = matrix[j][i];
        }
    }

    return transposed;
}

void printMatrix(double **matrix, int rows, int cols) {
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            printf("%5.3g  ", matrix[i][j]);
            if ((cols != 1) && (j + 1) % cols == 0) {
                printf("\n");
            }
        }
    }
    printf("\n");
}

void initializeMatrix(double **matrix, int rows, int cols) {
    for (int i = 0; i < rows; i++) {
        for (int j = 0, value = i; j < cols; j++, value += j * j) {
            matrix[i][j] = value;
        }
    }
}

int main() {
    int rows = 2, cols = 5;
    double **matrix, **transposed;

    matrix = allocateMatrix(rows, cols);
    if (!matrix) return 0;
    initializeMatrix(matrix, rows, cols);

    transposed = transposeMatrix(matrix, rows, cols);
    if (!transposed) {
        freeMatrix(matrix, rows);
        return 0;
    }

    printMatrix(matrix, rows, cols);
    printMatrix(transposed, cols, rows);

    freeMatrix(matrix, rows);
    freeMatrix(transposed, cols);

    return 0;
}




【 在 sqsl 的大作中提到: 】
: 我写了一段计算矩阵的转置矩阵的程序，运行虽然没有报错，但是我觉得我程序里是不是有两个错误？
: （1）验证了if( AT == NULL )之后，没必要再验证if( AT[i] == NULL )吧？属于多此一举；
: （2）定义**XT后缺少生成2行5列的全零矩阵的步骤。程序这次虽然没有出错，但容易出现内存地址被占用的情况？
: ...................
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