Given three sides, check whether triangle is valid or not.
Examples:
Input : a = 7, b = 10, c = 5 Output : Valid Input : a = 1 b = 10 c = 12 Output : Invalid
Approach: A triangle is valid if sum of its two sides is greater than the third side. If three sides are a, b and c, then three conditions should be met.
1.a + b > c 2.a + c > b 3.b + c > a
C++
// C++ program to check if three sides form a triangle or not #include <bits/stdc++.h> using namespace std; // function to check if three sider form a triangle or not bool checkValidity(int a, int b, int c) { // check condition if (a + b <= c || a + c <= b || b + c <= a) return false; else return true; } // Driver function int main() { int a = 7, b = 10, c = 5; if (checkValidity(a, b, c)) cout << "Valid"; else cout << "Invalid"; } // This code is contributed by Aditya Kumar (adityakumar129) |
C
// C program to check if three sides form a triangle or not #include <stdio.h> #include <stdbool.h> // function to check if three sider form a triangle or not bool checkValidity(int a, int b, int c) { // check condition if (a + b <= c || a + c <= b || b + c <= a) return false; return true; } // Driver function void main() { int a = 7, b = 10, c = 5; if (checkValidity(a, b, c)) printf("Valid"); else printf("Invalid"); } // This code is contributed by Aditya Kumar (adityakumar129) |
Java
// Java program to check validity of any triangle public class GFG { // Function to calculate for validity public static int checkValidity(int a, int b, int c) { // check condition if (a + b <= c || a + c <= b || b + c <= a) return 0; else return 1; } // Driver function public static void main(String args[]) { int a = 7, b = 10, c = 5; // function calling and print output if ((checkValidity(a, b, c)) == 1) System.out.print("Valid"); else System.out.print("Invalid"); } } // This code is contributed by Aditya Kumar (adityakumar129) |
Python3
# Python3 program to check if three # sides form a triangle or not # function to check if three sides # form a triangle or not def checkValidity(a, b, c): # check condition if (a + b <= c) or (a + c <= b) or (b + c <= a) : return False else: return True # driver code a = 7b = 10c = 5if checkValidity(a, b, c): print("Valid") else: print("Invalid") |
C#
// C# program to check // validity of any triangle using System; class GFG { // Function to calculate for validity public static int checkValidity(int a, int b, int c) { // check condition if (a + b <= c || a + c <= b || b + c <= a) return 0; else return 1; } // Driver code public static void Main() { int a = 7, b = 10, c = 5; // function calling and print output if ((checkValidity(a, b, c)) == 1) Console.Write("Valid"); else Console.Write("Invalid"); } } // This code is contributed by Nitin Mittal. |
PHP
<?php // PHP program to check if three // sides form a triangle or not // function to check if three sider // form a triangle or not function checkValidity($a, $b, $c) { // check condition if ($a + $b <= $c || $a + $c <= $b || $b + $c <= $a) return false; else return true; } // Driver Code $a = 7; $b = 10; $c = 5; if (checkValidity($a, $b, $c)) echo "Valid"; else echo "Invalid"; // This code is contributed by nitin mittal. ?> |
Javascript
<script> // Javascript program to check if three // sides form a triangle or not // function to check if three sider // form a triangle or not function checkValidity(a, b, c) { // check condition if (a + b <= c || a + c <= b || b + c <= a) return false; else return true; } // Driver function let a = 7, b = 10, c = 5; if (checkValidity(a, b, c)) document.write("Valid"); else document.write("Invalid"); // This code is contributed by Mayank Tyagi </script> |
Output
Valid
Time Complexity: O(1)
Auxiliary Space: O(1)
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