Area of a triangle using Heron’s formula in C

 #include <stdio.h>

#include <math.h>

int main() {

    double side1, side2, side3, s, area;

    // Input the lengths of the sides

    printf("Enter length of side 1: ");

    scanf("%lf", &side1);

    printf("Enter length of side 2: ");

    scanf("%lf", &side2);

    printf("Enter length of side 3: ");

    scanf("%lf", &side3);

    // Calculate semi-perimeter

    s = (side1 + side2 + side3) / 2;

    // Calculate area using Heron's formula

    area = sqrt(s * (s - side1) * (s - side2) * (s - side3));

    // Check if the sides can form a triangle

    if (area > 0) {

        printf("Area of the triangle = %.2f\n", area);

    } else {

        printf("Invalid sides! The given lengths do not form a triangle.\n");

    }

    return 0;

}