C Programming Questions and Answers – Register Variables – 2

This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Register Variables – 2”.

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

1. When compiler accepts the request to use the variable as a register?
a) It is stored in CPU
b) It is stored in cache memory
c) It is stored in main memory
d) It is stored in secondary memory
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2. Which data type can be stored in register?
a) int
b) long
c) float
d) all of the mentioned
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3. Which of the following operation is not possible in a register variable?
a) Reading the value into a register variable
b) Copy the value from a memory variable
c) Global declaration of register variable
d) All of the mentioned
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4. Which among the following is the correct syntax to declare a static variable register?
a) static register a;
b) register static a;
c) Both static register a; and register static a;
d) We cannot use static and register together
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5. Register variables reside in ________
a) stack
b) registers
c) heap
d) main memory
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6. What will be the output of the following C code?

a) Segmentation fault
b) main is called twice
c) main is called once
d) main is called thrice
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7. What will be the output of the following C code?

a) 0
b) Junk value
c) Compile time error
d) Nothing
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8. What will be the output of the following C code?

a) Varies
b) 0
c) Junk value
d) Compile time error
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