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#2
yangfrancis2015-05-02 21:38
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代码如下 求各位指导
#include<iostream>
using namespace std;
int main(){
double f,g;
double l,m,n;
cout<<"请输入两个双精度浮点数：";
cin>>f>>g;
cout<<"请输入三个精度浮点数：";
cin>>l>>m>>n;
Compare compare1(f,g);
Compare compare2(l,m,n);
compare1.min();
compare2.min_1();
compare1.show();
compare2.show_1();
return 0;
}
class Compare
{ private:
double t1;
double t2;
double x,y,z;
double a,b;
public:
Compare(double ,double,double);
Compare(double,double);
void min();
void min_1();
void show();
void show_1();
};
void Compare::min()
{ if(a>b)
t1=b;
else
t1=b;
}
void Compare::min_1()
{
double temp;
if(x>y)
temp=y;
else
temp=x;
if(z>temp)
t2=temp;
else
t2=z;
}
void Compare::show(){
cout<<t1;
}
void Compare::show_1(){
cout<<t2;
}
Compare::Compare(double f,double g)
{
a=f;
b=g;
}
Compare::Compare(double l,double m,double n)
{
x=l;
y=m;
z=n;
}
错误显示为
D:\C++\test1\test1.cpp(10) : error C2065: 'Compare' : undeclared identifier
D:\C++\test1\test1.cpp(10) : error C2146: syntax error : missing ';' before identifier 'compare1'
D:\C++\test1\test1.cpp(10) : error C2065: 'compare1' : undeclared identifier
D:\C++\test1\test1.cpp(11) : error C2146: syntax error : missing ';' before identifier 'compare2'
D:\C++\test1\test1.cpp(11) : error C2065: 'compare2' : undeclared identifier
D:\C++\test1\test1.cpp(12) : error C2228: left of '.min' must have class/struct/union type
D:\C++\test1\test1.cpp(13) : error C2228: left of '.min_1' must have class/struct/union type
D:\C++\test1\test1.cpp(14) : error C2228: left of '.show' must have class/struct/union type
D:\C++\test1\test1.cpp(15) : error C2228: left of '.show_1' must have class/struct/union type
