Formal parameter name expected
时间: 2023-12-11 19:05:29 浏览: 68
This error message usually appears in programming languages such as Java or C++ when a function or method is declared without specifying the name of the parameter(s) it expects.
For example, in Java:
```java
public void myMethod(int) {
// Code goes here
}
```
should be:
```java
public void myMethod(int myParameter) {
// Code goes here
}
```
By adding a name to the parameter, the function can now receive and use the value passed to it.
相关问题
formal parameter name expected
This error occurs when a function or method is defined with a parameter, but the parameter name is missing. It means that the function or method is expecting a name for the parameter but none was provided.
For example, consider the following function definition:
```
function calculateArea(width, height, ) {
return width * height;
}
```
In this case, there is a trailing comma after the `height` parameter, which is causing the error. The function is expecting a parameter name after the comma, but there is none. To fix this error, simply remove the trailing comma:
```
function calculateArea(width, height) {
return width * height;
}
```
It is important to ensure that all function and method parameter names are properly defined to avoid this error.
redefinition of formal parameter
这个问题属于技术问题,我可以给你解答。在编程中,如果一个形式参数(也就是函数定义时的参数)被多次定义,就会发生“redefinition of formal parameter”的错误。这通常是因为在函数定义中,已经有一个同名的参数存在,而你又定义了一个同名的参数。解决这个问题的方法就是避免多次定义同名的形式参数。