Question

How to define macro with arguments in C

Answer 1

#include <stdio.h>

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

int main() {
	int radius = 6;
	
  	float a = area(radius);
  	
  	printf("%f", a);
  	
	return 0;
}



/*
run:

113.040001

*/

 

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