C Programming Solved Problems Let us C Yashwant Kanitkar Chapter 2

 Q: (c) If lengths of three sides of a triangle are input through the keyboard, write a program to find the area of the triangle.

#include <stdio.h>

#include<math.h>

int main()

{

    double a, b, c, s, area;

    printf("Enter the length of side a:\n");

    scanf("%lf", &a);

    printf("Enter the length of side b:\n");

    scanf("%lf", &b);

    printf("Enter the length of side c:\n");

    scanf("%lf", &c);

    s = (a + b + c) / 2;

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

    printf("The area of the triangle is: %lf", area);

    return 0;

}

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