练习37

#include <iostream>
using namespace std;


void swap(int& a, int&b) {
int temp = a;
a = b;
b = temp;
}


int main()
{
int a[3][3];
cout << "输入9个整数作为矩阵元素值" << endl;
for (int i = 0; i < 3; i ++)
for (int j = 0; j < 3; j ++)
cin >> a[i][j];
cout << "初始矩阵：" << endl;
for (int i = 0; i < 3; i ++) {
for (int j = 0; j < 3; j ++)
cout << a[i][j] << ' ';
cout << endl;
}
for (int i = 0; i < 3; i ++)
for (int j = 0; j < i; j ++)
swap(a[i][j], a[j][i]);


for (int i = 0; i < 3; i ++) {
for (int j = 0; j < 3; j ++)
cout << a[i][j] << ' ';
cout << endl;
}
return 0;
}