Question

How to define macro with arguments in C++

Answer 1

#include <iostream>

#define area(r) (3.14*r*r)

int main() {
	int radius = 6;
	
  	float a = area(radius);
  	
  	std::cout << a;
  	
	return 0;
}



/*
run:

113.04

*/

 

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