Question

关于一个较为简单的C++程序

include<iostream>
long double frrto(long double)
int main()
{
using namespace std;
long double yen;
cout<<"Enter the yen:";
cin>>yen;
long double yen=long double frrto (yuan);
cout<<yen<<"yen=";
cout<<yuan<<"yuan"<<endl;
return 0:
}
long double frrto(long double sts)
{
return 0.06035*sts;
}
请问这条程序有没有问题？如果有的话请版主我改正，并告诉我如何编译？

Answer 1

#include<iostream>
long double frrto(long double) ; //少分号
int main()
{
	using namespace std;
long double yen;
cout<<"Enter the yen:";
cin>>yen;

long double yuan=frrto (yen); //变量写反了吧？！    函数调用不要加类型定义
cout<<yen<<"yen=";
cout<<yuan<<"yuan"<<endl;
return 0; //应该是分号
}

long double frrto(long double sts)
{
return (long double)0.06035*sts;  
}

Answer 2

#include<iostream>  //少个#
long double frrto(long double); //少个;
int main()
{
	using namespace std;
long double yen;
cout<<"Enter the yen:";
cin>>yen;
long double yuan=frrto (yen);  //去掉long double
cout<<yen<<"yen=";
cout<<yuan<<"yuan"<<endl;
return 0;  //用;
}
long double frrto(long double sts)
{
return 0.06035*sts;
}