expected primary -expression before=

This error message usually occurs when there is an unexpected equal sign (=) in the code. It usually means that the compiler was expecting a valid primary expression (such as a variable name or a constant value) before the equal sign, but instead found an unexpected symbol.

To fix this error, you need to check the code carefully and make sure that all the equal signs are used correctly. Sometimes, this error can also be caused by a missing semicolon or a mismatched brace, so it's important to check the entire code for any syntax errors.

相关问题

expected primary-expression before char

这个错误提示是因为在代码中出现了语法错误。通常这种错误提示会伴随着出错的代码行号，你可以通过查看错误行号周围的代码来定位错误。

"expected primary-expression before char"的意思是在 char 前面期望有一个主表达式（primary-expression），但是实际上却没有出现，导致编译器无法识别代码。

可能的原因有很多，以下是一些常见的：

1. 缺少分号：在前一行末尾没有添加分号，导致当前行代码无法解析。

2. 变量名错误：变量名拼写错误，或者变量名与关键字重复。

3. 语法错误：代码中可能存在语法错误，如括号不匹配、拼写错误等。

如果你能提供更多的上下文或代码片段，我可以帮助你更准确地定位问题并提供解决方案。

expected primary-expression before

“expected primary-expression before” 意思是编译器在编译代码时遇到了一个语法错误，表明在某个地方缺少了一个主要表达式。这可能是因为缺少了一个变量、常量或函数调用，或者在该处使用了一个不正确的符号。