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Using G++ to compile multiple .cpp and .h files
To compile multiple files like file_name.h, or file_name.cpp at once, we can use the files like a list one after another. The syntax will be like this −
g++ abc.h xyz.cpp
To run the program, we can use this −
./a.out
Example
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 }
Example
#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; }
Output
$ 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 $
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