C++ Math lround() Functions

C++ Math lround() Functions with tutorial for beginners and professionals with examples on isgreaterequal(), less(), islessequal(), islessgreater(), isunordered(), exp(), frexp(), ldexp(), log(), log10(), modf(), exp2(), expm1(), log1p(), log2(), logb(), scalbn(), scalbln() etc.

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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:

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

#include 
#include
using namespace std;
int main()
{
    float x=2.3;
    double y=-12.6;
    float z=23.6;
    std::cout << "The value of x is : " <

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

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