17_1体会函数参数传递（1）
[cpp]#include <iostream>
using namespace std;
void jiaohuan(int x, int y);
int main(void)
{ www.zzzyk.com
int a,b;
cin>>a>>b;
if (a<b)
jiaohuan(a, b);
cout<<"a,b="<<a<<","<<b;
return 0;
}
void jiaohuan(int x, int y)
{
int t;//新定义一个数,用来保存数
t=x; //将x保存在t内
x=y;
y=t;
}
//该程序能够实现互换
<pre class="cpp" name="code">#include <iostream>
using namespace std;
void jiaohuan(int *x, int *y);//形式参数为指针
int main(void)
{
int a,b;
cin>>a>>b;
if (a<b)
jiaohuan(&a, &b);
cout<<"a,b="<<a<<","<<b;
return 0;
}
void jiaohuan(int *x, int *y)
{
int t;//定义一个新的数
t=*x;//将指针x保存在t内
*x=*y; //y的指针复制给x
*y=t;//指针x赋值给指针y
}
//该程序能够实现两数互换</pre><pre class="cpp" name="code"><pre class="cpp" name="code">#include <iostream>
using namespace std;
void jiaohuan(int &x, int &y);//形式参数为引用x的值
int main(void)
{
int a,b;
cin>>a>>b;
if (a<b)
jiaohuan(a, b); //引用a,b的值
cout<<"a,b="<<a<<","<<b;
return 0;
}
void jiaohuan(int &x, int &y)
{
int t;
t=x; //x的值保存在t内
x=y; //y的值复制给x
y=t;//由t保存的x的值赋值给y
}
//该程序能够实现两数互换</pre><br>
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<pre></pre>
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补充：软件开发 , C++ ,
