我已经开始使用 C++ 语言。我对它很陌生。该程序从用户那里获取一个复数并将其打印出来。但是它给了我很多错误,例如,
prog.cpp: In function ‘int main()’:
prog.cpp:26: error: ‘GetReal’ was not declared in this scope
prog.cpp:26: error: ‘SetReal’ was not declared in this scope
prog.cpp:27: error: ‘GetImag’ was not declared in this scope
prog.cpp:27: error: ‘SetImag’ was not declared in this scope
prog.cpp:28: error: ‘print’ was not declared in this scope
prog.cpp: At global scope:
prog.cpp:34: error: expected unqualified-id before ‘)’ token
prog.cpp:40: error: expected unqualified-id before ‘float’
prog.cpp:40: error: expected `)' before ‘float’
prog.cpp: In function ‘void SetImag(float)’:
prog.cpp:64: error: ‘real’ was not declared in this scope
prog.cpp: In function ‘void SetReal(float)’:
prog.cpp:68: error: ‘imag’ was not declared in this scope
prog.cpp: In function ‘void print()’:
prog.cpp:73: error: ‘Cout’ was not declared in this scope
prog.cpp:73: error: ‘real’ was not declared in this scope
prog.cpp:73: error: ‘imag’ was not declared in this scope
代码如下:
/*
Date=13 January 2011
Program: To take a complex number from the user and print it on the screen */
/*Defining a class*/
#include <iostream>
using namespace std;
class complex
{
float real;
float imag;
public:
complex();
complex(float a,float b);
float GetReal();
float GetImag();
void SetReal();
void SetImag();
void print();
};
int main()
{
complex comp;
SetReal(GetReal());
SetImag(GetImag());
print();
}
complex()
{
real=0;
imag=0;
}
complex(float a,float b)
{
real=a;
imag=b;
}
float GetReal()
{
float realdata;
cout<<"Enter Real part:"<<endl;
cin>>realdata;
return realdata;
}
float GetImag()
{
float imagdata;
cout<<"Enter Imaginary part"<<endl;
cin>>imagdata;
return imagdata;
}
void SetImag(float a)
{
real=a;
}
void SetReal(float b)
{
imag=b;
}
void print()
{
printf("The Complex number is %f+%fi",real,imag);
}
最佳答案
由于 GetReal()
等被声明为 complex
类的一部分,您应该在您创建的对象上调用它们:
complex comp;
comp.SetReal(comp.GetReal());
comp.SetImag(comp.GetImag());
comp.print();
同样,您需要确定 complex
构造函数的实现范围:
complex::complex()
{
real=0;
imag=0;
}
这同样适用于您帖子中未显示的其他成员函数。
关于c++ - 复数打印程序出现故障,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4690119/