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Program Based on If & Else

Program to check whether a triangle is equilateral, isosceles or scalene

Input - Output

Input
Enter Three side of a triangle : 7 8 7

Output
It's an isosceles triangle

Input
Enter Three side of a triangle : 3 8 7

Output
It's an scalene triangle

Algorithm

Step 1: START

Step 2: Take three number 'a','b'and 'c' as an input.

Step 3: Check the condition:

   if(a==b && b==c)

      print equilateral triangle

    else if(a==b || a==c || b==c )

      print isosceles triangle

   else

      print scalene triangle

Step 4: END

CODE


/* Check type of triangle */
#include  <stdio.h>
int main()
{
      int a,b,c;
      printf(" Enter three side's of a triangle : ");
      scanf("%d%d%d",&a,&b,&c);
      if(a==b && b==c)
          printf(" It's an equilateral triangle ");
      else if(a==b || a==c || b==c )
          printf(" It's an isosceles triangle ");
      else
          printf(" It's an scalene triangle");
    return 0;
}


/* Check type of triangle */
#include <iostream>
using namespace std;
int main()
{
      int a,b,c;
      cout<<" Enter three side's of a triangle : ";
      cin>>a>>b>>c;
      if(a==b && b==c)
          cout<<" It's an equilateral triangle ";
      else if(a==b || a==c || b==c )
          cout<<" It's an isosceles triangle ";
      else
          cout<<" It's an scalene triangle";
    return 0;
}

OutPut

Enter three side's of a triangle : 7 8 7

It's an isosceles triangle

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