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.

hackerrank functions problem solution in c++ programming

Functions problem solution in C++ programming | HackerRank

#include <iostream>
#include <algorithm>
using namespace std;

int max_of_four(int a, int b, int c, int d) {
    return max(max(a,b),max(c,d));
}

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;
}