C++ Math lround
This function is used to round off the given value and cast to long integer.
Syntax
Suppose a number is 'x'. Syntax would be:
Example
long int lround(data_type x);
Parameter
x : The value which can be either float or double.
Return value
It returns the rounded value of x. The return type of the function is long int.
Example 1
Let's see a simple example of using lround function
Example
#include <iostream>
#include<math.h>
using namespace std;
int main()
{
float x=2.3;
double y=-12.6;
float z=23.6;
std::cout << "The value of x is : " <<x<< std::endl;
std::cout << "The value of y is : " <<y<< std::endl;
std::cout << "The value of z is : " <<z<< std::endl;
cout<<"Rounded value of x is : "<<lround(x)<< std::endl;
cout<<"Rounded value of y is : "<<lround(y)<< std::endl;
cout<<"Rounded value of z is : "<<lround(z)<< std::endl;
return 0;
}
Output:
Output
The value of x is : 2.3
The value of y is : -12.6
The value of z is : 23.6
Rounded value of x is : 2
Rounded value of y is : -13
Rounded value of z is : 24