Functions in C HackerRank Solution

Hello Programmers, In this post, you will know how to solve the Functions in C HackerRank Solution. This problem is a part of the HackerRank C Programming Series.

One more thing to add, don’t directly look for the solutions, first try to solve the problems of Hackerrank by yourself. If you find any difficulty after trying several times, then you can look for solutions.

Functions in C

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In this challenge, you will learn simple usage of functions in C. Functions are a bunch of statements grouped 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;
    }

+= : 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;

Task

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.

Note

There is not built in max function in C. Code that will be reused is often put in a separate function, e.g. int max(x, y) that returns the greater of the two values.

Input Format

Input will contain four integers –  a,b,c,d one in each line.

Output Format

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

Sample Input

3
4
6
5

Sample Output

6

Functions in C HackerRank Solution

#include <stdio.h>
int max_of_four(int,int,int,int);
/*
Add `int max_of_four(int a, int b, int c, int d)` here.
*/
// Functions in C - Hacker Rank Solution START
int max_of_four(int a,int b,int c,int d)
{
    int gre;
    if(a>b && a >c && a >d)
        gre = a;
    else if(b>a && b>c && b>d)
        gre = b;
    else if(c>a && c>b && c>d)
        gre = c;
    else if(d>a && d>b && d>c)
        gre = d;
    else if(a=b=c=d)
        gre = a;
return gre;
}
// Functions in C - Hacker Rank Solution END
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;
}

Disclaimer: The above Problem (Functions in C) is generated by Hackerrank but the Solution is Provided by BrokenProgrammers. This tutorial is only for Educational and Learning purposes.

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