C Storage Classes of Variables MCQ | C Programming Questions with Answers | Page 4

C Storage Classes of Variables MCQ questions with answers focus on auto, static, extern, and register storage classes. Understanding these concepts is essential for mastering memory management and variable scope in C programming. These programming questions and answers are frequently asked in interviews and placement exams conducted by Wipro, TCS, and Infosys. Practicing MCQs on C storage classes helps improve your grasp of variable lifetime, linkage, and accessibility. Download the C programming MCQ PDF and attempt online practice tests to build a strong foundation in variable management.

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Q31

What does extern means in a function declaration ?

A The function has global scope.
B The function need not be defined
C Nothing really
D The function has local scope only to the file it is defined in.

Answer: Option C

Q32

extern int s; int t; static int u; main ( ) { } which of s, t and u are available to a function present in another file ?

A only s
B s & u
C s, t, u
D none

Answer: Option A

Q33

What will be the output of  the following code ? static int i = ; main ( ) { int sum=; do { sum+=(/i); }while (<i - - ); printf ("sum of the series is %d", sum ); }

A It will print the sum of the series 1/5+1/4+.....+1/1.
B It will produce a compilation error
C It will produce a runtime error.
D None of the above.

Answer: Option C

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