c 2b 2b round number up

1#include <iostream>
2#include <cmath>
3
4using namespace std;
5
6int main()
7{
8	double num1 = 4.8;
9  	double num2 = 4.3;
10  	cout << ceil(num1) << endl; // --> 5
11  	cout << ceil(num2) << endl; // --> 5
12}

1#include <iostream>
2#include <cmath>
3
4using namespace std;
5
6int main()
7{
8    int x = 15;
9    double result;
10    result = round(x);
11    cout << "round(" << x << ") = " << result << endl;
12
13    return 0;
14}
15