C++笔记简单异常处理语句 -

标题: C++笔记简单异常处理语句 [打印本页]

作者: 51黑tt 时间: 2016-3-5 13:39
标题: C++笔记简单异常处理语句
简单异常处理语句

#include<iostream.h>
const double PI=3.1415;
int main()
{
int countarea(int n);
int r;
try
{
      cout<<"输入一个1-7的整数:\n";
      cin>>r;
      double area;
      area=PI*r*r;
      cout<<"求半径为“<<countarea(r)<<"的圆面积：\n"
      cout<<"面积：area = "<<area<<endl;
}
catch(XXX)
{
      cout<<"发生异常！\n";
}
}

int countarea(int n)
{
if(n<1 || n>7)
      throw XXX();
return n;
}

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