Question

How to calculate the area of a triangle using Heron’s formula in C++

Answer 1

#include <iostream>
#include <cmath>   // for sqrt

// Function to calculate area using Heron's formula
double heronArea(double a, double b, double c) {
    double s = (a + b + c) / 2.0; // semi-perimeter
    double area = sqrt(s * (s - a) * (s - b) * (s - c));
    
    return area;
}

int main() {
    double a = 6, b = 9, c = 13;

    // Check validity of triangle
    if (a + b > c && a + c > b && b + c > a) {
        double area = heronArea(a, b, c);
        std::cout << "Area of the triangle = " << area << std::endl;
    } else {
        std::cout << "Invalid triangle sides!" << std::endl;
    }
}




/*
run:

Area of the triangle = 23.6643

*/

 

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