6.4值传递

c++个人学习备忘录

B站学习的练习代码，纯粹怕学习的内容忘了，放这里好查找，还可以跟大家一起共享

#include 
using namespace std;
void swap1(int num1, int num2)
{
	cout << "交换前:"  << endl;
	cout << "num1:" << num1 << endl;
	cout << "num2:" << num2 << endl;
	int temp = num1;
	num1 = num2;
	num2 = temp;
	cout << "交换后:" << endl;
	cout << "num1:" << num1 << endl;
	cout << "num2:" << num2 << endl;
	return;
}
int main6_4()
{
	//形参发生改变，并不会影响实参
	int a = 10;
	int b = 20;
	swap1(a, b);
	system("pause");
	return 0;
}