C++ 生成随机数矩阵并交换数字位置

以下是生成随机数矩阵并交换数字位置的 C++ 代码：

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

const int ROWS = 8;
const int COLS = 8;

void printMatrix(int matrix[][COLS], int rows, int cols) {
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            cout << matrix[i][j] << ' ';  // 使用单引号
        }
        cout << endl;
    }
}

void swapNumbers(int matrix[][COLS], int rows, int cols) {
    int x1, y1, x2, y2;
    cout << "Enter the coordinates of the first number (row column): ";
    cin >> x1 >> y1;
    cout << "Enter the coordinates of the second number (row column): ";
    cin >> x2 >> y2;
    if (x1 < 0 || x1 >= rows || x2 < 0 || x2 >= rows || y1 < 0 || y1 >= cols || y2 < 0 || y2 >= cols) {
        cout << "Invalid coordinates. Please try again." << endl;
        return;
    }
    int temp = matrix[x1][y1];
    matrix[x1][y1] = matrix[x2][y2];
    matrix[x2][y2] = temp;
}

int main() {
    int matrix[ROWS][COLS];
    srand(time(0)); // Seed the random number generator with the current time
    for (int i = 0; i < ROWS; i++) {
        for (int j = 0; j < COLS; j++) {
            matrix[i][j] = rand() % 10; // Generate random numbers between 0 and 9
        }
    }
    cout << "Randomly generated matrix:" << endl;
    printMatrix(matrix, ROWS, COLS);
    swapNumbers(matrix, ROWS, COLS);
    cout << "Matrix after swapping two numbers:" << endl;
    printMatrix(matrix, ROWS, COLS);
    return 0;
}

这个程序首先生成一个 8x8 的随机数矩阵，然后让用户输入两个数字的坐标，然后交换它们的位置，并输出交换后的矩阵。请注意，此程序只能交换矩阵中的两个数字，而不能交换两行或两列。如果用户输入的坐标无效，程序将提示用户重新输入。