C++ Exercises: Find the area of any triangle using Heron's Formula

C++ Basic: Exercise-18 with Solution

Write a C++ program to find the area of any triangle using Heron's formula.

Pictorial Presentation:

Sample Solution:

C++ Code :

#include <iostream>
#include <math.h>
using namespace std;

    int main()
    {
    	float side1, side2, side3, area, s;
		cout << "\n\n Find the area of any triangle using Heron's Formula :\n";
		cout << "----------------------------------------------------------\n";		
        cout<<" Input the length of 1st side  of the triangle : ";
    	cin>>side1;
        cout<<" Input the length of 2nd side  of the triangle : ";
    	cin>>side2;
        cout<<" Input the length of 3rd side  of the triangle : ";
    	cin>>side3;	
		s = (side1+side2+side3)/2;
		area = sqrt(s*(s-side1)*(s-side2)*(s-side3));
        cout<<" The area of the triangle is : "<< area << endl;
        cout << endl;
        return 0;
    }

Sample Output:

 Find the area of any triangle using Heron's Formula :                 
----------------------------------------------------------             
 Input the length of 1st side  of the triangle : 5                     
 Input the length of 2nd side  of the triangle : 5                     
 Input the length of 3rd side  of the triangle : 5                     
 The area of the triangle is : 10.8253

Flowchart:

C++ Code Editor:

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