二维数组矩阵相乘代码

以下是一个用C语言编写的二维数组矩阵相乘的代码示例:

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

typedef struct {
    int rows;
    int columns;
    int **elements;
} TwoDArray, *TwoDArrayPtr;

TwoDArrayPtr initTwoDArray(int rows, int columns) {
    TwoDArrayPtr arrayPtr = (TwoDArrayPtr)malloc(sizeof(TwoDArray));
    arrayPtr->rows = rows;
    arrayPtr->columns = columns;
    
    arrayPtr->elements = (int**)malloc(rows * sizeof(int*));
    for (int i = 0; i < rows; i++) {
        arrayPtr->elements[i = (int*)malloc(columns * sizeof(int));
    }
    
    return arrayPtr;
}

void matrixMultiply(TwoDArrayPtr paraPtr1, TwoDArrayPtr paraPtr2, TwoDArrayPtr *resultPtr) {
    if (paraPtr1->columns != paraPtr2->rows) {
        printf("矩阵不能相乘.\r\n");
        *resultPtr = NULL;
        return;
    }
    
    *resultPtr = initTwoDArray(paraPtr1->rows, paraPtr2->columns);
    
    for (int i = 0; i < paraPtr1->rows; i++) {
        for (int j = 0; j < paraPtr2->columns; j++) {
            int sum = 0;
            for (int k = 0; k < paraPtr1->columns; k++) {
                sum += paraPtr1->elements[i][k * paraPtr2->elements[k][j];
            }
            (*resultPtr)->elements[i][j = sum;
        }
    }
}

int main() {
    TwoDArrayPtr arrayPtr1, arrayPtr2, resultPtr;
    
    // 初始化两个矩阵
    arrayPtr1 = initTwoDArray(2, 3);
    arrayPtr2 = initTwoDArray(3, 2);
    
    // 对两个矩阵赋值
    
    // 矩阵相乘
    matrixMultiply(arrayPtr1, arrayPtr2, &resultPtr);
    
    // 打印结果矩阵
    for (int i = 0; i < resultPtr->rows; i++) {
        for (int j = 0; j < resultPtr->columns; j++) {
            printf("%d ", resultPtr->elements[i][j]);
        }
        printf("\n");
    }
    
    // 释放内存
    free(arrayPtr1);
    free(arrayPtr2);
    free(resultPtr);
    
    return 0;
}

这段代码使用了结构体`TwoDArray`来表示二维数组，并定义了`initTwoDArray`函数来初始化二维数组。`matrixMultiply`函数用于计算两个矩阵的乘积，并将结果存储在`resultPtr`指针指向的内存中。最后，在`main`函数中进行了相应的操作和打印结果。

请注意，这只是一个示例代码，具体的实现可能因编程语言或具体需求而有所不同。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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