Functions in c++ : Hacker Rank Solution : Techno Learner

1. 
   
   Techno Learner 

   Functions
   
   

Objective

Functions are a bunch of statements glued together. A function is provided with zero or more arguments, and it executes the statements on it. Based on the return type, it either returns nothing (void) or something.

The syntax for a function is

        

        return_type function_name(arg_type_1 arg_1, arg_type_2 arg_2, ...) {

             ...

            ...

            if return_type is non void]

                        return something of type `return_type`;

            }

For example, a function to return the sum of four parameters can be written as

        

        int sum_of_four(int a, int b, int c, int d) {

             int sum = 0;

            sum += a;

            sum += b;

            sum += c;

            sum += d;

            return sum;

        }

---

Write a function int max_of_four(int a, int b, int c, int d) which returns the maximum of the four arguments it  receives.

+= : Add and assignment operator. It adds the right operand to the left  operand and assigns the result to the left. operand 

a += b is equivalent to a = a + b;

Sample Input

        3

        4

        6    

        5

Sample Output

        6

 

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Techno Learner

Solution  C++ :

#include <iostream>

using namespace std;

int max_of_four(int a, int b, int c, int d) {

    return max(max(a,b),max(c,d));

}

int main() {

    int a, b, c, d;

    scanf("%d %d %d %d", &a, &b, &c, &d);

    int ans = max_of_four(a, b, c, d);

    printf("%d", ans);

    

    return 0;

}

 

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