Functions C++
Problem Statement :
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.
Solution :
Solution in C :
#include <iostream>
#include <cstdio>
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;
}
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