Question

How to calculate the area of a triangle given three sides in C

Answer 1

#include <stdio.h>
#include <math.h>

int main(void)
{
    double a = 3.0;
    double b = 6.0;
    double c  = 7.0;
    double s; // semi (half) perimeter
    double area;

    s = (a + b + c) / 2.0;

    area = s * (s - a) * (s - b) * (s - c);
    area = sqrt(area);

    printf("area = %lf", area);

    return 0;
}



/*
run:

area = 8.944272

*/

 

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