C++ 编译错误undefined reference to ' ' 求破....
刚学C++,对类不是很熟悉有道题大概是说什么求矩形的周长和面积,用类去做
我写了三个文件,一个.h,两个.cpp
但是编译时老是说undefined reference to ' ' 看了很久依然没有办法....求各位大神指教!
这是头文件
程序代码:
//Rectangle.h #ifndef RECTANGLE_H #define RECTANGLE_H class Rectangle { public: Rectangle(float = 1,float = 1); void perimeter(float ,float ); void area(float ,float ); float getLength(); float getWidth(); void setLengthWidth(float ,float ); private: float length; float width ; }; #endif
这是第一个cpp
程序代码:
// Rectangle.cpp #include <iostream> #include <stdexcept> #include "Rectangle.h" using namespace std; Rectangle::Rectangle(float a,float b) { setLengthWidth(a,b); } void Rectangle::perimeter(float a,float b) { cout << "The perimeter of the rectangle is " << 2(a+b) << endl; } void Rectangle::area(float a,float b) { cout << "The area of the rectangle is " << a*b << endl; } float Rectangle::getLength() { return length; } float Rectangle::getWidth() { return width; } void Rectangle::setLengthWidth(float a,float b) { if((a>=0.0&&a<=20.0)&&(b>=0.0&&b<=20.0)) { length = a; width = b; } else throw invalid_argument("The length or the width is out of range"); }
这是主函数的cpp
程序代码:
// RectangleClass.cpp #include <iostream> #include "Rectangle.h" using namespace std; int main() { float a,b; cout << "Please enter the length and width for the rectangle : "; cin >> a >> b; Rectangle Calculate(a,b); Calculate.perimeter(Calculate.getLength(),Calculate.getWidth()); Calculate.area(Calculate.getLength(),Calculate.getWidth()); return 0; }
在线等......