error: use of parameter outside function body before ] token c++

The error message "use of parameter outside function body before ] token" in C++ typically occurs when there is a mistake in the usage of a function parameter or an array index. Let's break down the error message and go through each step to understand the issue.

1. "use of parameter" - This part of the error message indicates that the error involves a parameter of a function or an array index. Parameters are the variables declared in the parentheses of a function, used to pass values into the function.

2. "outside function body" - This part suggests that the issue is occurring outside the body of a function. In C++, statements that use parameters should be inside the curly braces that define the function body.

3. "before ] token" - The error message indicates that the mistake is located before the closing square bracket ]. This suggests that the issue may be related to indexing an array or accessing a parameter with incorrect syntax.

To resolve this error, you should carefully review the code and check for the following common mistakes:

• Check if you are using a parameter before the opening curly brace { of a function body.
• Verify that you are using the correct syntax when accessing array elements or using parameters in your code.
• Ensure that you are not accidentally using a parameter outside the scope of a function.

By identifying and correcting these mistakes, you should be able to resolve the "use of parameter outside function body before ] token" error in C++.