C++ Program To Input Base, Height of Triangle, Calculate Area

Easyway How To Write a Program in C++ for Calculating Area of Triangle When base and height is given

Program Statement: Write a C++ program to input base and height of a triangle and calculates and prints the area of triangle.

Input base and height, compute area of triangle c++ program

Formula for Area of Triangle C++ program when base and height are given

The formula for area of triangle to be used in this C++ program is as as follows:

1. area of triangle = 1 / 2 x base x height

How Formula of  Area of Triangle is Transformed into C++ Arithmetic Expressions

In C++ programming, we write the above formula as following C++ expression.

area = 1.0/2.0 * base * height

or we can also use the formula: area = 0.5 * base * height

Source Code for Modern C++ Compilers / IDEs

#include<iostream>
#include<iomanip>  
using namespace std;
int main()
{

   float area, base, height;
   
    cout<<"Enter base  = ";
    cin>>base;
    cout<<"Enter height  = ";
    cin>>height;
   
    area = 1.0 / 2.0  * base * height;
 
    cout<<"Area of  Triangle = "<<setprecision(2)<<area<<endl;
    return 0;
}

C++ Source Code for Calculating Area of Triangle When Base and Height are Given (for Turbo C++ 3.0 compiler / IDE)

#include<iostream.h>

#include<conio.h>

#include<iomanip.h>  

void main()

{

   float area, base, height;

   clrscr();

    cout<<"Enter base  = ";

    cin>>base;

    cout<<"Enter height  = ";

    cin>>height;

     
    area = 1.0 / 2.0  * base * height;

   

    cout<<"Area of  Triangle = "<<setprecision(2)<<area<<endl;

    

    getch();

}

Sample Run Output Window: Area of Triangle in C Plus Plus Program 

How This Program works : C++ Source Code for Calculating Area of Triangle When Base and Height are Given

Here is a detailed C++ program with simplified documentation included as C++ comments, so that the logic of C++ Program Area of Triangle can be understood by readers and other C++ programmers easily:

#include<iostream.h>   //include for cin, cout

#include<conio.h>     //include for clrscr()

#include<iomanip.h>  //include for setprecision()

void main()

{

   float area, base, height;   //declare variables

   clrscr();

    cout<<"Enter base  = ";

    cin>>base;                          //input base

    cout<<"Enter height  = ";

    cin>>height;      //input height

 
    area = 1.0 / 2.0  * base * height;  //compute area

   

    cout<<"Area of  Triangle = "<<setprecision(2)<<area<<endl; // show result

    

    getch();

}

Output:
Enter Base: 5.2
Enter Height: 10.8
Area of Triangle = 28.08