Functions in CPP - Hackerrank Solution

 

Functions in C++

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Objective:

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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.

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Solution:

#include <iostream> #include <cstdio> using namespace std; int max_of_four(int a, int b, int c, int d){ if(a>b){ if(a>c){ if(a>d)return a; else return d; } else{ if(c>d)return c; else return d; } } else{ if(b>c){ if(b>d)return b; else return d; } else{ if(c>d)return c; else return 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; }

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Note:

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