第一周 项目1 C++语言中函数参数传递的三种方式

#include<iostream>
using namespace std;
<span style="color:#ff0000;">void myswap(int x, int y)
{
int t;
t=x;
x=y;
y=t;
}
</span>int main()
{
int a,b;
cin>>a>>b;
<span style="color:#ff0000;">myswap(a,b);
</span>	cout<<a<<" "<<b<<endl;
return 0;
}

#include<iostream>
using namespace std;
<span style="color:#ff0000;">void myswap(int *p1, int *p2)
{
int t;
t=*p1;
*p1=*p2;
*p2=t;
}
</span>int main()
{
int a,b;
cin>>a>>b;
<span style="color:#ff0000;">myswap(&a,&b);
</span>	cout<<a<<" "<<b<<endl;
return 0;
}

<img src="https://img-blog.csdn.net/20150907170858193" alt="" />

#include<iostream>
using namespace std;
<span style="color:#ff0000;">void myswap(int &x, int &y)
</span>{
int t;
t=x;
x=y;
y=t;
}
int main()
{
int a,b;
cin>>a>>b;
<span style="color:#ff0000;">myswap(a,b);
</span>	cout<<a<<" "<<b<<endl;
return 0;
}