Program Area of Triangle Algorithm Flowchart

Q: Write a C++ Program to input three sides of a triangle. The program then calculates the Area of triangle by the formula 

Formula of area of triangle when 3 sides given

Where s = ( a+b+c ) / 2

Write Down Algorithm of C++ Program Area of Triangle

1. Start

2. Input a,b,c

3. Calculate s = (a + b + c ) / 2

4. Calculate area = sqrt( s*(s-a)*(s-b)*(s-c))

5. print "Area of Triangle=", area

6. End

Develop Flowchart of C++ Program Area of Triangle

develop flowchart c plus plus program area of triangle

Generally we prepare a flowchart and algorithm which is independent of  any programming language so here is a better flowchart version for C++ Program Area of Triangle with mathematical formula instead of C++ arithmetic expressions.

Flowchart for C++ Program How To Calculate Area of triangle when 3 side are input

develop flowchart c plus plus program area of triangle programming language independent

Source code for modern C++ IDEs /Compilers ( Used Dev C++ )

#include<iostream>
#include<math.h>

using namespace std;
int main( )
{
float a,b,c,s,area;

cout<<"Enter side A of triangle = ";
cin>>a;
cout<<"Enter side B of triangle = ";
cin>>b;
cout<<"Enter side C of triangle = ";
cin>>c;

s = (a + b + c ) / 2;

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

cout<< "Area of Triangle = "<<area;
return 0;

}

Output of the sample run:

Enter side A of triangle = 5

Enter side B of triangle = 5

Enter side C of triangle = 5

Area of Triangle = 10.8253

--------------------------------

Process exited after 4.697 seconds with return value 0

Press any key to continue . . .

Write Down Source Code of C++ Program Area of Triangle for Turbo C++ 3.0 Compiler / IDE

#include<iostream.h>

#include<conio.h>
#include<math.h>

void main( )

{

float a,b,c,s,area;

clrscr();

cout<<"Enter side A of triangle = ";

cin>>a;

cout<<"Enter side B of triangle = ";

cin>>b;

cout<<"Enter side C of triangle = ";

cin>>c;

s = (a + b + c ) / 2;

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

cout<< "Area of Triangle = "<<area;

getch();

}