ch2/exercises2/ex6.c

   1 /*check for isoceles,equilateral,right triangle*/
   2
   3 #include<stdio.h>
   4 #include<math.h>
   5
   6 int main()
   7 {
   8         float s1,s2,s3;
   9         float temp1,temp2,temp3;
  10         printf("Enter the three sides of triangle: ");
  11         scanf("%f %f %f",&s1,&s2,&s3);
  12
  13
  14         /*checking equality*/
  15         if(s1==s2 && s2==s3)
  16                 printf("This is an equilateral triangle.\n");
  17         else if(s1==s2 || s2==s3 || s3==s1)
  18                 printf("This is an isoceles triangle.\n");
  19         else
  20                 printf("This is a scalene triangle\n");
  21
  22
  23         temp1 = sqrt(pow(s2,2)+pow(s3,2));
  24         temp2 = sqrt(pow(s1,2)+pow(s3,2));
  25         temp3 = sqrt(pow(s2,2)+pow(s1,2));
  26         if(s1==temp1 || s2==temp2 || s3==temp3)
  27                 printf("It is an right triangle\n");
  28
  29         return 0;
  30 }