关于codeblocks中头文件位置的疑问
请问用codeblocks时自定义的头文件（.h)和有关头文件里函数的定义一（.cpp)应该放在什么位置才能让main.cpp调用到这个头文件和头文件的定义呢？现在是把这一个.h文件和两个.cpp文件随便放在了桌面上的一个新建文件夹里。
这是头文件
#ifndef COMPLEX_H_INCLUDED
#define COMPLEX_H_INCLUDED
class Complex
{
public:
explicit Complex(double = 0.0, double = 0.0);
Complex operator+(const Complex&) const;
Complex operator-(const Complex&) const;
void print() const;
private:
double real;
double imaginary;
};
#endif // COMPLEX_H_INCLUDED
这是头文件里函数的定义
#include<iostream>
#include"Complex.h"
using namespace std;
Complex::Complex(double realPart,double imaginaryPart)
:real(realPart),imaginary(imaginaryPart)
{
}
Complex Complex::operator+(const Complex &operand2) const
{
return Complex(real+operand2.real,imaginary+operand2.imaginary);
}
Complex Complex::operator-(const Complex &operand2) const
{
return Complex(real-operand2.real,imaginary-operand2.imaginary);
}
void Complex::print() const
{
cout<<'('<<real<<","<<imaginary<<')';
}
运行时的报错：
||=== Build file: "no target" in "no project" (compiler: unknown) ===|
C:\Users\xuxia\Desktop\CodeBlocks\MinGW\bin\..\lib\gcc\mingw32\4.9.2\..\..\..\libmingw32.a(main.o):main.c:(.text.startup+0xa7)||undefined reference to `WinMain@16'|
||error: ld returned 1 exit status|
||=== Build failed: 2 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|
这是main.cpp函数
#include<iostream>
#include"Complex.h"
using namespace std;
int main()
{
Complex x;
Complex y(4.3,8.2);
Complex z(3.3,1.1);
cout<<"x: ";
x.print();
cout<<"\ny: ";
y.print();
cout<<"\nz: ";
z.print();
x = y + z;
cout<<"\n\nx = y + z:"<<endl;
x.print();
cout<<" = ";
y.print();
cout<<" + ";
z.print();
x = y - z;
cout<<"\n\nx = y - z:"<<endl;
x.print();
cout<<" = ";
y.print();
cout<<" - ";
z.print();
cout<<endl;
}
这是运行时的报错：
||=== Build file: "no target" in "no project" (compiler: unknown) ===|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::Complex(double, double)'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::Complex(double, double)'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::Complex(double, double)'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::operator+(Complex const&) const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::operator-(Complex const&) const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
C:\Users\xuxia\Desktop\大学课程\C++\10.16.o:10.16.cpp|| undefined reference to `Complex::print() const'|
||error: ld returned 1 exit status|
||=== Build failed: 15 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|
WinMain瞩目，应该创建控制台应用程序，而不是窗口程序
控制台应用程序的入口是main
窗口程序的入口是WinMain
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