Which of the following is NOT a valid C# data type?
A. char
B. void
C. long
D. decimal
Answer: Option B
A. char
B. void
C. long
D. decimal
Answer: Option B
What is the correct syntax to declare a variable in C#?
A. num = int;
B. var num;
C. num int;
D. int num;
What is the purpose of the 'var' keyword in C#?
A. Declares a constant
B. Converts a variable to string
C. Implicitly declares a variable
D. Defines a method
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