Which one of the following is not a reserved keyword for C?
A. auto
B. case
C. main
D. default
E. register
Answer: Option C
Solution (By Examveda Team)
In C programming, reserved keywords are words that have predefined meanings and cannot be used as identifiers (such as variable names, function names, etc.).Option A: auto - This is a reserved keyword in C, used for automatic variables.
Option B: case - This is a reserved keyword in C, used in switch statements to specify different cases.
Option C: main - This is not a reserved keyword in C. Although main is a commonly used function name for the entry point of a C program, it is not a reserved keyword.
Option D: default - This is a reserved keyword in C, used in switch statements as a default case.
Option E: register - This is a reserved keyword in C, used to define register variables for fast access.
Therefore, the correct answer is Option C: main.
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Related Questions on C Fundamentals
What is the primary purpose of a function prototype in C?
A. Declare a variable
B. Declare a function
C. Define a function
D. Assign a value
What is the correct syntax for declaring a variable in C?
A. int variable_name;
B. variable_name = 5;
C. variable_name int;
D. int = variable_name;

auto- default storage class and variables declares inside the function.
case- must be unique
register - stored in the CPU register of the processor
default- no associated value , only reserved value
main- c program execution begins and it is not a reserved keyword
because main() can't be used as an identifier so it is a reserved keyword
Because main() is a Function.
option C
so..main is not a keyword...??