Functions in C – Hacker Rank Solution | HackerRank Programming Solutions | HackerRank C Solutions

Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank of Programming Language C . At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight you profile to the recruiters.

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C is one of the most widely used Programming Languages. it is basically used to build Operating System. C was developed by Dennis Ritchie in 1972. Below are some examples of C Programming which might you understanding the basics of C Programming.

Objective

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 –  , one on 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 – Hacker Rank 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;
}

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