Question

how we can write an algorithm to find an area of a triangle

Answer 1

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

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

Write Down Source Code of C++ Program Area of Triangle

#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();

}

Answer 2

The algorithm for calculating the area of a triangle is,

1. START
2. Read base and height.
3. Input the values from the user.
4. Store  1/2 * base * height in the variable 'area'.
5. Print the area.
6. End

In the above algorithm,

• The variables 'base' and 'height' are created to take the inputs.
• After that, the area is stored in a new variable 'area'.
• Finally the desired output for the area of the triangle is printed.