要一次编译多个文件,例如file_name.h或file_name.cpp,我们可以像列表一样使用文件。语法如下:
g++ abc.h xyz.cpp
要运行程序,我们可以使用它-
./a.out
float area(float r){ return (3.1415*r*r); //area of a circle } float area(float l, float w){ return (l * w); //area of a rectangle }
#include <iostream> #include "area.h" using namespace std; main(){ cout << "Area of circle with radius 2.5 is: " << area(2.5) << endl; cout << "Area of rectangle with length and width are 5 and 7 is: " << area(5, 7) << endl; }
输出结果
$ g++ area.h find_area.cpp $ ./a.out Area of circle with radius 2.5 is: 19.6344 Area of rectangle with length and width are 5 and 7 is: 35 $