Function Hackerrank Solution in C++

Problem-6:-

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.

A sample 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 read four variables and return the sum of them 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;
}

---

You have to write a function int max_of_four(int a, int b, int c, int d) which reads four arguments and returns the greatest of them.

+= : 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;

Input Format

Input will contain four integers -  , one in each line.

Output Format

Print the greatest of the four integers.
PS: I/O will be automatically handled.

Sample Input

3
4
6
5

Sample Output

6

Solution:-

#include <iostream>

#include <cstdio>

using namespace std;

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

    if(a>b){

        if(a>c){

            if(a>d){

                return a;

            }

            else

            {

                return d;

            }

        }

        else{

            if(c>d){

                return c;

            }

            else{

                return d;

            }

        }

    }

    else{

        if(b>c){

            if(b>d){

                return b;

            }

            else{

                return d;

            }

        }

        else{

            return c;

        }

    }

}

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;

}

Explanation:

In this program, we use the concept of Nested 'If-else' statement

Hackerrank Completion Proof:-

Hope, it Helps!!