Home > Article > Backend Development > How to define functions by yourself in c++
By using the function keyword, you can create a custom function, including specifying the return type, naming the function, defining the parameter list, writing the function body, and returning a value (for non-void functions). The sample code demonstrates how to calculate the sum of two numbers and return the result. After you define a function, you can call it using the function name and argument list.
How to use C to define functions by yourself
In C, custom functions are passedfunction
keyword to create. Function definitions generally have the following format:
<code class="cpp">return_type function_name(parameter_list) { // 函数体 }</code>
Steps:
int
, void
, or string
. {}
to enclose the function body, which contains the specific code for function execution. void
, it is required to return a value in the function body. Example:
<code class="cpp">// 计算两个数的和并返回结果 int add(int a, int b) { return a + b; }</code>
Using a custom function:
After defining the function, you can use the function name and Parameter list to call it.
<code class="cpp">int result = add(5, 10); // 结果为 15</code>
Tip:
return
statement can be omitted in the function body. The above is the detailed content of How to define functions by yourself in c++. For more information, please follow other related articles on the PHP Chinese website!