C++ 使用多维数组添加两个矩阵的程序-立地货

使用多维数组将两个矩阵相加的C++程序

这个程序需要两个 r*c 阶矩阵并将其存储在二维数组中。然后，程序将这两个矩阵相加并显示在屏幕上。

要理解此示例，您应该了解以下C++ 编程主题:

C++ 多维数组

C++ 数组

在这个程序中，用户被要求输入行数 r和列数 c。本程序中 r和 c的值应小于100。

要求用户输入两个矩阵的元素(r*c 阶)。

然后，程序将这两个矩阵相加，保存在另一个矩阵(二维数组)中并显示在屏幕上。

示例: 使用多维数组将两个矩阵相加

#include <iostream>
using namespace std;
int main()
{
    int r, c, a[100][100], b[100][100], sum[100][100], i, j;
    cout << "Enter number of rows (between 1 and 100): ";
    cin >> r;
    cout << "Enter number of columns (between 1 and 100): ";
    cin >> c;
    cout << endl << "Enter elements of 1st matrix: " << endl;
    // Storing elements of first matrix entered by user.
    for(i = 0; i < r; ++i)
       for(j = 0; j < c; ++j)
       {
           cout << "Enter element a" << i + 1 << j + 1 << " : ";
           cin >> a[i][j];
       }
    // Storing elements of second matrix entered by user.
    cout << endl << "Enter elements of 2nd matrix: " << endl;
    for(i = 0; i < r; ++i)
       for(j = 0; j < c; ++j)
       {
           cout << "Enter element b" << i + 1 << j + 1 << " : ";
           cin >> b[i][j];
       }
    // Adding Two matrices
    for(i = 0; i < r; ++i)
        for(j = 0; j < c; ++j)
            sum[i][j] = a[i][j] + b[i][j];
    // Displaying the resultant sum matrix.
    cout << endl << "Sum of two matrix is: " << endl;
    for(i = 0; i < r; ++i)
        for(j = 0; j < c; ++j)
        {
            cout << sum[i][j] << "  ";
            if(j == c-1)
                cout << endl;
        }
    return 0;
}

输出

Enter number of rows (between 1 and 100): 2
Enter number of columns (between 1 and 100): 2
Enter elements of 1st matrix:
Enter element a11:-4
Enter element a12: 5
Enter element a21: 6
Enter element a22: 8
Enter elements of 2nd matrix:
Enter element b11: 3
Enter element b12:-9
Enter element b21: 7
Enter element b22: 2
Sum of two matrix is:
-1  -4
13   10