Merge pull request #929 from MathurUtkarsh/patch-2

Create TriangleEverywhere.cpp

Author: smv1999

Codechef Problems/DSA Learning Series/TriangleEverywhere.cpp

@@ -0,0 +1,71 @@
+/* You're given the length of three sides a, b, and c respectively. 
+Now If these three sides can form an Equilateral Triangle then print 1, if these three sides can form an Isosceles Triangle then print 2, 
+if these three sides can form a Scalene Triangle then print 3, otherwise print −1.*/
+
+/* Input:
+
+·       First-line will contain three numbers a, b, and c separated by space.
+
+Output:
+
+Print the answer in a new line.
+
+Constraints
+
+·       1≤a,b,c≤103
+
+Sample Input 1:
+
+            2 4 3
+
+Sample Output 1:
+
+            3
+
+Sample Input 2:
+
+            4 4 4
+
+Sample Output 2:
+
+            1
+
+Sample Input 3:
+
+            4 4 9
+
+Sample Output 2:
+
+            -1
+
+EXPLANATION:
+
+·       In the first example, (2, 4, 3) will form a Scalene Triangle.
+
+·       In the second example, (4, 4, 4) will form an Equilateral Triangle.
+
+·       In the third example, (4, 4, 9) will not form a triangle.
+
+*/
+
+
+#include <iostream>
+using namespace std;
+
+int main()
+{
+    int a, b, c; 
+    cin >> a >> b >> c; 
+    if (a + b > c && b + c > a && c + a > b) // condition for a triangle.
+    {
+        if (a == b && b == c) // condition for equilateral triangle.
+            cout << "1";
+        else if (a == b || b == c || c == a) // condition for isosceles triangle.
+            cout << "2";
+        else
+            cout << "3"; 
+    }
+    else
+        cout << "-1"; 
+    return 0;
+}