By | 02.11.2016

# Check triangle is equilateral, isosceles or scalene

Write a C Program to check triangle is a equilateral, isosceles or scalene. Here’s simple Program to check triangle is a equilateral, isosceles or scalene in C Programming Language.

A triangle is : :

• A triangle is equilateral triangle, If it’s sides are equal.
• A triangle is isosceles triangle, If any two sides of a triangle are equal.
• A triangle is scalene triangle, If none of the sides are equal.

Below is the source code for C Program to check triangle is a equilateral, isosceles or scalene which is successfully compiled and run on Windows System to produce desired output as shown below :

### SOURCE CODE : :

```/*  C Program to check triangle is a equilateral, isosceles or scalene  */

#include<stdio.h>
#include<conio.h>

int main()
{
int x,y,z;
printf("Enter the sides of a triangle(x,y,z):: \n");
scanf("%d %d %d",&x,&y,&z);
if((x==y) && (y==z))
{
printf("\nThe triangle is equilateral.");
}
else if((x==z) || (y==z) || (x==y))
{
printf("\nThe triangle is isoseles.");
}
else
{
printf("\nThe triangle is scalene.");
}
return 0;
}```

### OUTPUT : :

```/*  C Program to check a triangle is a equilateral, isosceles or scalene  */

-------------------------FIRST RUN---------------------

Enter the sides of a triangle(x,y,z)::
4
5
6

The triangle is scalene.

--------------------------SECOND RUN--------------------

Enter the sides of a triangle(x,y,z)::
2
2
2

The triangle is equilateral.

----------------------THIRD RUN------------------------

Enter the sides of a triangle(x,y,z)::
4
4
6

The triangle is isoseles.```

Above is the source code for C Program to check triangle is a equilateral, isosceles or scalene which is successfully compiled and run on Windows System.The Output of the program is shown above .

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