Back-End Programming Exam > Back-End Programming Videos > Learn to Program with C++: Beginner to Expert > C++ Programming Tutorials - Unary Scope Resolution Operator
C++ Programming Tutorials - Unary Scope Resolution Operator Video Lecture | Learn to Program with C++: Beginner to Expert - Back-End Programming
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73 videos|7 docs|23 tests
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FAQs on C++ Programming Tutorials - Unary Scope Resolution Operator Video Lecture - Learn to Program with C++: Beginner to Expert - Back-End Programming
| 1. What is the purpose of the unary scope resolution operator in C programming? |  |
Ans. The unary scope resolution operator (::) in C programming is used to access global variables or functions from within the scope of a block or a function. It helps to differentiate between local variables and global variables with the same name.
| 2. How does the unary scope resolution operator work in C programming? | |
Ans. When the unary scope resolution operator (::) is used in C programming, it allows us to access global variables or functions that are defined outside the current scope. It is placed before the name of the global variable or function to indicate that it belongs to the global scope.
| 3. Can the unary scope resolution operator be used with local variables in C programming? | |
Ans. No, the unary scope resolution operator (::) is used specifically for accessing global variables or functions. It cannot be used with local variables, as local variables are only accessible within the scope they are defined in.
| 4. What happens if a local variable and a global variable have the same name in C programming? | |
Ans. If a local variable and a global variable have the same name in C programming, the local variable takes precedence within its scope. This means that the value of the local variable will be used instead of the value of the global variable within the block or function where it is defined.
| 5. Are there any limitations or considerations when using the unary scope resolution operator in C programming? | |
Ans. Yes, there are a few limitations and considerations when using the unary scope resolution operator (::) in C programming. Firstly, it can only be used to access global variables or functions, not local variables. Secondly, it can only be used within the scope of a block or a function. Lastly, it can only be used if there is a global variable or function with the same name as the one being accessed.
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Dec 23, 2024 Last updated |
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