# C++ functions list - Learn CPP

C++ functions list - Learn CPP, There are a lot of ready-made functions in the programming language (C++) that can be used with numbers and also used to perform arithmetic operations, and there are a group of these functions that can be used directly; Because they are known to the compiler in the programming language (C++) by default and some functions need to be included by yourself first so that you can use them, and in order for the user to benefit from these functions, a file called (cmath) must be included.

### The most important functions used in the C++ programming language

Here is a list of the most important functions in C++:

#### function abs(x)

It is used to find the (absolute value) of the number we are using (x).

#### function fabs(x)

This function is used to calculate the absolute value of a number whose type (float) contains a decimal point.

#### function floor(x)

Returns the integer smaller or equal to the number we pass to this function in place of the parameter (x).

#### function ceil(x)

It is used to find an integer greater than or equal to the number we pass to it in place of the parameter (x).

#### function rint(x)

Used to calculate and find the closest integer to the number we use with this function in place of the parameter (x).

#### function fmax(x,y)

It is used to find the greater of the two numbers we pass in place (x) and (y).

#### function fmin(x,y)

It is used to find the smaller number between the two numbers we pass in place of the parameters (x) and (y).

#### function fmod(x,y)

Used to calculate the remainder of dividing the value of (x) by the value of (y).

#### function pow(x,y)

This function is used to multiply a value (x) by a value (y) and then return the result.

#### function sqrt(x)

This function is used to calculate the square root of the number we pass to a place (x).

#### function cbrt(x)

Used to calculate the cube root of the number we use in place of (x).

#### function hypot(x,y)

This function is used to calculate the hypotenuse value, i.e. sqrt(x2 +y2) is calculated while keeping any number after the comma

#### function exp(x)

This function is used to calculate the (Exponential) value of the number we use in place of (x).

#### function log(x)

This function is used to calculate the logarithm value of the number we use in place of (x).

#### function sin(x)

Used to calculate the sine of the number we use the place of (x).

#### function cos(x)

Used to calculate the cosine value of the number we use the place of (x).

#### function tan(x)

This function is used to calculate the tangent of the number we use in the place of (x).