How to fix the Expected Unqualified Id Error in C++?

Since all of these errors occur due to incorrect syntax, we can avoid these errors by using the correct syntax in our program. Nowadays, many popular code editors contain plugins to check for syntax errors automatically and highlight them even before compilation so it is easy to find and fix these errors.

We can also keep in mind the following points which are one of the most common reasons for this error:

1. Placing Accurate Semi-colons and Braces

Simply placing semi-colons at the end of the statements according to the standards will help in avoiding this error.

C++

#include <iostream>
using namespace std;
 
int main()
{
    int a = 3;
    int b = a % 25;
 
    cout << b << endl;
 
    return 0;
}

In the code above, we placed a semi-colon after every declaration which helps the compiler to understand that the statement ends here and your code will run successfully.

2. Valid Variable Declaration

You should not declare a variable name that starts with a numeric character as it is not allowed. Also, keywords cannot be used as variables and the identifiers must be unique in their scope so keeping that in mind while declaring the variables will help in avoiding these types of errors.

C++

#include <iostream>
using namespace std;
 
int main()
{
 
    int abc = 10;
    int def = 5;
 
    int ijk = abc * def;
    cout << ijk;
    return 0;
}

The above code is an example of how you can declare variables to avoid these types of errors.

Syntax Error in C++

Syntax plays a vital role and even a slight mistake can cause a lot of unexpected errors. One of these errors is the “expected unqualified id error” or “expected unqualified id before ‘ ‘ token” which can arise due to some common oversights while writing your code. In this article, we are going to dive deep into the expected unqualified id error and what can be its possible solutions.