Algorithm
Problem Name:
In this HackerRank Functions in C++ programming problem solution,
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;
Input Format
Input will contain four integers - a,b,c,d,one per line.
Output Format
Return the greatest of the four integers.
PS: I/O will be automatically handled.
Sample Input
3
4
6
5
Sample Output
6
Code Examples
#1 Code Example with C++ Programming
Code -
C++ Programming
#include <iostream>
#include <cstdio>
using namespace std;
int max_of_four(int a, int b, int c, int d);
int main(void)
{
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\n", ans);
return 0;
}
int max_of_four(int a, int b, int c, int d)
{
if(a >= b && a >= c && a >= d)
return a;
else if(b >= a && b >= c && b >= d)
return b;
else if(c >= b && c >= a && c >= d)
return c;
else
return d;
}
Input
Output