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Quiz on Identifiers and Variables in C

Quiz on Identifiers and Variables in C

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Question 1 of 10

1. Question

What is an identifier in C programming?

A function name only
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Any name used to identify elements like variables, functions, arrays, etc.
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A number used in loops
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A built-in keyword
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Question 2 of 10

2. Question

Which of the following is a valid identifier in C?

int
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2value
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_sum
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float
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Question 3 of 10

3. Question

Which of these is NOT allowed in a variable name in C?

Underscore (_)
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Digits after the first character
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Special characters like @ or #
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Alphabets
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Question 4 of 10

4. Question

What is the correct way to declare a variable in C?

variable int a;
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declare int a;
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int a;
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a int;
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Question 5 of 10

5. Question

int a = 5;
printf(“%d”, a);

5
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%d
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a
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Error
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Question 6 of 10

6. Question

What is the default value of an uninitialized local variable in C?

0
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Garbage value
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Null
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Not defined
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Question 7 of 10

7. Question

Which of the following is a correct statement about variables in C?

A variable name can start with a number
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Variable names are case-insensitive
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A variable must be declared before use
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Variables can contain symbols like $
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Question 8 of 10

8. Question

Which data type is used to store decimal values in C?

int
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char
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float
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void
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Question 9 of 10

9. Question

What is the maximum number of characters allowed in an identifier in standard C?

8
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31
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64
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Unlimited
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Question 10 of 10

10. Question

Which of the following variable names is invalid in C?

total_marks
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totalMarks2
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Total123
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int
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