Functions in C - Hackerrank Solution

Functions in C - Hackerrank Solution

Objective

In this challenge, you will learn simple usage of functions in C. 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;

    }

Task

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.
Note: I/O will be automatically handled.

Sample Input

3

4

6

5

Sample Output

6

#include <stdio.h> #include <stdio.h> /* Add `int max_of_four(int a, int b, int c, int d)` here. */ int max_of_four(int x,int y,int z,int w) { int max; max=x; if(y>max&&y>z&&y>w) { max=y; } else if(z>max&&z>w&&z>y) { max=z; } else if(w>max&&w>y&&w>z) { max=w; } else { max=x; } return max; } 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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