#include<stdio.h>
int main()
{
	int a,b,c,c1,c2,c3;
	char istriangle;
	do
	{
 	 	printf("\nenter 3 integers which are sides of triangle\n");
	   	scanf("%d%d%d",&a,&b,&c);
	   	printf("\na=%d\tb=%d\tc=%d",a,b,c);	
	  	c1 = a>=1 &&  a<=10;
          		c2= b>=1 &&  b<=10;
	   	c3= c>=1 &&  c<=10;
 		 if (!c1)
      	     		 printf("\nthe value of a=%d is not the range of permitted value",a);
	  	 if (!c2)
	      		printf("\nthe value of b=%d is not the range of permitted value",b);
	   	if (!c3)
	      		printf("\nthe value of c=%d is not the range of permitted value",c);
 	} while(!(c1 && c2 && c3));  

	// to check is it a triangle or not

	if( a<b+c && b<a+c && c<a+b )
		istriangle='y';
	else
		istriangle ='n'; 
	if (istriangle=='y')
		if ((a==b) && (b==c))
			printf("equilateral triangle\n");
		else if ((a!=b) && (a!=c) && (b!=c))
			printf("scalene triangle\n");
		   else
			printf("isosceles triangle\n");
	else
		printf("Not a triangle\n");
	return 0;
}