C expression must include class type is how to return a responsibility-CodePudding

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C expression must include class type is how to return a responsibility

Time：09-15

CodePudding user response:

When you use a member of the class, you can not only in front of a class declaration,
This is wrong,

 
The class SqList; 

Void the STA (... ) {
//the use of the members of the SqList 
} 

The class SqList {
Members of the//
}

CodePudding user response:

What is the definition of the Sqlist? Inside elem is how to define the