What does a function in c++ consist of?

C function consists of function name, parameter list, return type and function body. The function name consists of letters, numbers and underscores, starting with a letter; the parameter list specifies the type and number of input parameters, listed in parentheses; the return type specifies the type of output value, if there is no return value, it is void; the function body contains the execution operation statement, surrounded by braces.

Construction of a function in C

A function in C is composed of the following elements:

1. Function name

The function name identifies the function and consists of letters, numbers and underscores, and must start with a letter.

2. Parameter list

The parameter list specifies the parameters accepted by the function. The type and number of parameters are specified in parentheses.

3. Return type

The return type specifies the type of value returned by the function. If the function does not return any value, the return type is void.

4. Function body

The function body contains statements that perform function operations. It is enclosed by curly brackets ({ }).

Example:

<code class="cpp">int add(int x, int y) {
  return x + y;
}</code>

In this example:

• ##Function name: add
• Parameter list: (int x, int y)
• Return type: int
• Function body: return x y ;

The above is the detailed content of What does a function in c++ consist of?. For more information, please follow other related articles on the PHP Chinese website!