Introduction

Control Statement

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Function

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Array

Pointer

OOPS

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Mar 30

**2021**# Program to find the area of triangle

In this example, We will learn to calculate the area of a triangle. This program will calculate the area of any type of triangle.

We will use following formula to calculate area of the triangle

## Area of triangle

For detail explanation of area of a triangle, You can check this website.

Lets look an example to make clear concepts

## CODE:

```
#include <iostream>
#include <cmath>
using namespace std;
int main()
{
int a, b, c;
cout << "Enter the three sides of the triangle\n";
//taking input from user
cin >> a >> b >> c;
//calculating s
float s = (float)(a + b + c) / 2;
//calculating area
float area = sqrt(s * (s - a) * (s - b) * (s - c));
//printing the area
cout << "Area of triangle = " << area << " sqt. unit" << endl;
return 0;
}
```

The output of above program is

```
Enter the three sides of the triangle
5
4
3
Area of triangle = 6 sqt. unit
```

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