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By: a guest on Mar 18th, 2014  |  syntax: None  |  size: 1.44 KB  |  views: 46  |  expires: Never
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  1. #include <stdio.h>
  2.  
  3. int main()
  4. {
  5.         int Side_1, Side_2, Side_3;
  6.  
  7.         printf("Please enter the length of the first side of the triangle: ");
  8.         scanf("%d%*c", &Side_1);
  9.  
  10.         printf("Please enter the length of the second side of the triangle: ");
  11.         scanf("%d%*c", &Side_2);
  12.  
  13.         printf("Please enter the length of the third side of the triangle: ");
  14.         scanf("%d%*c", &Side_3);
  15.                
  16.                 if ((Side_1 <= 0) ||(Side_2 <= 0) || (Side_3 <= 0))
  17.                         printf("You can not have a negative value for any of the sides. Your triangle is invalid.");
  18.                        
  19.                 else
  20.                         if ((Side_1 == Side_2) && (Side_1 == Side_3) && (Side_2 == Side_3))
  21.                                 printf("You have entered valid dimensions for an equilateral triangle.");
  22.                
  23.                         else
  24.                                 if ((Side_1 == Side_2) && (Side_1 != Side_3) && (Side_2 != Side_3))
  25.                                         printf("You have entered valid dimensions for an isoceles triangle.");
  26.                        
  27.                                 else
  28.                                         if ((Side_2 == Side_3) && (Side_1 != Side_3) && (Side_2 != Side_1))
  29.                                                 printf("You have entered valid dimensions for an isoceles triangle.");
  30.                                                
  31.                                         else
  32.                                                 if ((Side_1 == Side_3) && (Side_1 != Side_2) && (Side_2 != Side_3))
  33.                                                         printf("You have entered valid dimensions for an isoceles triangle.");
  34.                                
  35.                                                 else
  36.                                                         if ((Side_1 != Side_2) && (Side_1 != Side_3) && (Side_2 != Side_3) && (Side_1 + Side_2 > Side_3) || (Side_1 + Side_3 > Side_2) OR (Side_2 + Side_3 > Side_1))
  37.                                                         printf("You have entered valid dimensions for a scalene triangle.");
  38. return(0);
  39. }
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