The Ten Most Common C++ Mistakes

Although many C++ programmers take measures to prevent bugs, mistakes still slip through. This list of the ten most common mistakes while writing C++ code can help both new and veteran programmers:

1. You forgot to declare the variable.

   
   



2. You used the wrong uppercase and lowercase letters; for example, you typed Main when you meant main.

   
   



3. You used one equal sign (=) when you were supposed to use two (==), either in an if statement or in a for loop.

   
   



4. You forgot #include <iostream> or using namespace std;.

   
   



5. You dropped the laptop in the swimming pool.

   
   



6. You forgot to call new and just started using the pointer anyway.

   
   



7. You forgot the word public: in your classes so everything turned up private.

   
   



8. You let the dog eat the remote.

   
   



9. You forgot to type the parentheses when calling a function that takes no parameters.

   
   



10. You forgot a semicolon, probably at the end of a class declaration.

    
    

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