# Whole part of a number in C++

## Introduction

In this tutorial, you will learn how to get the **whole** part of a number/float using the C++ programming language.

For instance, given a number (*float type*) such as **68.311**. The whole part would be **68**, so that is what we are going to achieve.

## Method #1: Using std::modf

We can use the function std::modf to separate both parts of the number such as:

```
#include <iostream>
#include <cmath> //Important!
int main()
{
float myFloat = 68.311;
float wholePart;
std::modf(myFloat, &wholePart);
std::cout << wholePart << std::endl; //Returns 68
return 0;
}
```

**NOTE**: Do not forget to include the *cmath* library, otherwise we may get the std::modf is not a member of std error.

## Method #2: Using std::floor()

We can use the floor() function to only get the whole part of the number, it rounds down to the nearest integer

```
#include <iostream>
#include <cmath> //Important!
int main()
{
float myFloat = 68.311;
int whole = std::floor(myFloat); //68
std::cout << whole << std::endl; //Returns 68
return 0;
}
```

**NOTE**: Do not forget to include the *cmath* library, otherwise we may get the std::floor is not a member of std error.

## References

Read more about the std::modf function here: https://en.cppreference.com/w/cpp/numeric/math/modf

Read more about the std::floor function here: https://www.cplusplus.com/reference/cmath/floor/