C++ Math round
This function is employed to round the provided value, which may be a float or double data type.
For example:
Example
round(5.8)= 6;
round(-1.1)= -1;
Syntax
Suppose a number is 'x'. Syntax would be:
Example
return_type round(data_type x);
Parameter
x : The value that can be either a float or a double.
Return value
It provides the rounded value of x. The output data type could be float, double, or long double.
Example 1
Let's explore a basic scenario where the value of x is greater than zero.
Example
#include <iostream>
#include<math.h>
using namespace std;
int main()
{
float x=8.3;
std::cout << "The value of x is : " <<x<< std::endl;
cout<<"Rounded value of x is : "<<round(x);
return 0;
}
Output:
Output
The value of x is : 8.3
Rounded value of x is : 8
Example 2
Let's consider a basic scenario where the value of x is below zero.
Example
#include <iostream>
#include<math.h>
using namespace std;
int main()
{
double x=-9.9;
std::cout << "The value of x is : " <<x<< std::endl;
cout<<"Rounded value of x is : "<<round(x);
return 0;
}
Output:
Output
The value of x is : -9.9
Rounded value of x is : -10
