C++ round number down

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
	double num1 = 4.8;
  	double num2 = 4.3;
  	cout << floor(num1) << endl; // --> 4
  	cout << floor(num2) << endl; // --> 4
}

C++ round number up

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
	double num1 = 4.8;
  	double num2 = 4.3;
  	cout << ceil(num1) << endl; // --> 5
  	cout << ceil(num2) << endl; // --> 5
}

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