MCQ Exam Test

Q1

What will be the output of the following C code? #include <stdio.h> void main() { #define const int const max = 32; printf("%d", max); }

A Run time error
B 32
C int
D const

Q2

What will be the output of the following C code? #include <stdio.h> int m() { int p = 5; return p; } void main() { int *k = m(); printf("%d", k); }

A 5
B Junk value
C 0
D Error

Q3

What will be the output of the following C code? #include <stdio.h> #define COLD int main() { #ifdef COLD printf("COLD\t"); #undef COLD #endif #ifdef COLD printf("HOT\t"); #endif }

A HOT
B COLD
C COLD HOT
D No Output

Q4

Which function definition will run correctly?

A int sum(int a, int b) return (a + b);
B int sum(int a, int b) {return (a + b);}
C int sum(a, b) return (a + b);
D none of the mentioned

Q5

Which among the following is wrong for "register int a;"?

A Compiler generally ignores the request
B You cannot take the address of this variable
C Access time to a is critical
D None of the mentioned

Q6

C preprocessor is conceptually the first step during compilation.

A TRUE
B FALSE
C Depends on the compiler
D Depends on the standard

Q7

The #elif directive cannot appear after the preprocessor #else directive.

A TRUE
B FALSE

Q8

How is search done in #include and #include"somelibrary.h" normally or conventionally?

A When former is used, current directory is searched and when latter is used, standard directory is searched
B When former is used, predefined directory is searched and when latter is used, current directory is searched and then predefined directories are searched
C When former is used, search is done in implementation defined manner and latter is used to search current directory
D For both, search for somelibrary is done in implementation-defined manner

Q9

What will be the output of the following C code? #include <stdio.h> int main() { register int i = 10; int p = &i; p = 11; printf("%d %d\n", i, *p); }

A Depends on whether i is actually stored in machine register
B 10 10
C 11 11
D Compile time error

Q10

What is the format identifier for "static a = 20.5;"?

A %s
B %d
C %f
D Illegal declaration due to absence of data type

Q11

What will be the sequence of allocation and deletion of variables in the following C code? #include <stdio.h> int main() { int a; { int b; } }

A >b, a->b
B >b, b->a
C >a, a->b
D >a, b->a

Q12

What will be the output of the following C code? #include <stdio.h> int main() { register const int i = 10; i = 11; printf("%d\n", i); }

A 10
B Compile time error
C Undefined behaviour
D 11

Q13

#pragma exit is primarily used for?

A Checking memory leaks after exiting the program
B Informing Operating System that program has terminated
C Running a function at exiting the program
D No such preprocessor exist

Q14

Array sizes are optional during array declaration by using . . . . . . . . keyword.

A auto
B static
C extern
D register

Q15

Preprocessor feature that supply line numbers and filenames to compiler is called?

A Selective inclusion
B macro substitution
C Concatenation
D Line control

Q16

What will be the output of the following C code? #include <stdio.h> int i; int main() { extern int i; if (i == 0) printf("scope rules\n"); }

A scope rules
B Compile time error due to multiple declaration
C Compile time error due to not defining type in statement extern i
D Nothing will be printed as value of i is not zero because i is an automatic variable

Q17

Which data type can be stored in register?

A int
B long
C float
D all of the mentioned

Q18

What will be the output of the following C code? #include <stdio.h> void main() { register int x = 5; m(); printf("x is %d", x); } void m() { x++; }

A 6
B 5
C Junk value
D Compile time error

Q19

What will be the output of the following C code? #include <stdio.h> void m(); void n() { m(); } void main() { void m() { printf("hi"); } }

A hi
B Compile time error
C Nothing
D Varies

Q20

What will be the output of the following C code? #include <stdio.h> void main() { #define max 45 max = 32; printf("%d", max); }

A 32
B 45
C Compile time error
D Varies

Q21

What will be the output of the following C code? #include <stdio.h> #define MIN 0 #ifdef(MIN) #define MAX 10 #endif int main() { printf("%d %d\n", MAX, MIN); return 0; }

A 10 0
B Compile time error
C Run time error
D Preprocessor error

Q22

Which directory the compiler first looks for the file when using #include?

A Current directory where program is saved
B COMPILERINCLUDE
C S:SOURCEHEADERS
D Both C:COMPILERINCLUDE and S:SOURCEHEADERS simultaneously

Q23

What will be the output of the following C code? #include <stdio.h> #define foo(m, n) m * n = 10 int main() { printf("in main\n"); }

A In main
B Compilation error as lvalue is required for the expression m*n=10
C Preprocessor error as lvalue is required for the expression m*n=10
D None of the mentioned

Q24

What will be the output of the following C code? #include <stdio.h> enum m{JAN, FEB, MAR}; enum m foo(); int main() { enum m i = foo(); printf("%d\n", i); } int foo() { return JAN; }

A Compile time error
B 0
C Depends on the compiler
D Depends on the standard

Q25

What will be the output of the following C code? #include <stdio.h> #define MIN 0); #ifdef MIN #define MAX 10 #endif int main() { printf("%d %d\n", MAX, MIN return 0; }

A 10 0
B Compile time error due to illegal syntax for printf
C Undefined behaviour
D Compile time error due to illegal MIN value

C Programming - Part 38

What will be the output of the following C code? #include <stdio.h> void main() { #define const int const max = 32; printf("%d", max); }

What will be the output of the following C code? #include <stdio.h> int m() { int p = 5; return p; } void main() { int *k = m(); printf("%d", k); }

What will be the output of the following C code? #include <stdio.h> #define COLD int main() { #ifdef COLD printf("COLD\t"); #undef COLD #endif #ifdef COLD printf("HOT\t"); #endif }

Which function definition will run correctly?

Which among the following is wrong for "register int a;"?

C preprocessor is conceptually the first step during compilation.

The #elif directive cannot appear after the preprocessor #else directive.

How is search done in #include and #include"somelibrary.h" normally or conventionally?

What will be the output of the following C code? #include <stdio.h> int main() { register int i = 10; int p = &i; p = 11; printf("%d %d\n", i, *p); }

What is the format identifier for "static a = 20.5;"?

What will be the sequence of allocation and deletion of variables in the following C code? #include <stdio.h> int main() { int a; { int b; } }

What will be the output of the following C code? #include <stdio.h> int main() { register const int i = 10; i = 11; printf("%d\n", i); }

#pragma exit is primarily used for?

Array sizes are optional during array declaration by using . . . . . . . . keyword.

Preprocessor feature that supply line numbers and filenames to compiler is called?

What will be the output of the following C code? #include <stdio.h> int i; int main() { extern int i; if (i == 0) printf("scope rules\n"); }

Which data type can be stored in register?

What will be the output of the following C code? #include <stdio.h> void main() { register int x = 5; m(); printf("x is %d", x); } void m() { x++; }

What will be the output of the following C code? #include <stdio.h> void m(); void n() { m(); } void main() { void m() { printf("hi"); } }

What will be the output of the following C code? #include <stdio.h> void main() { #define max 45 max = 32; printf("%d", max); }

What will be the output of the following C code? #include <stdio.h> #define MIN 0 #ifdef(MIN) #define MAX 10 #endif int main() { printf("%d %d\n", MAX, MIN); return 0; }

Which directory the compiler first looks for the file when using #include?

What will be the output of the following C code? #include <stdio.h> #define foo(m, n) m * n = 10 int main() { printf("in main\n"); }

What will be the output of the following C code? #include <stdio.h> enum m{JAN, FEB, MAR}; enum m foo(); int main() { enum m i = foo(); printf("%d\n", i); } int foo() { return JAN; }

What will be the output of the following C code? #include <stdio.h> #define MIN 0); #ifdef MIN #define MAX 10 #endif int main() { printf("%d %d\n", MAX, MIN return 0; }

Report a problem

What will be the output of the following C code? #include <stdio.h> void main() { #define const int const max = 32; printf("%d", max); }

What will be the output of the following C code? #include <stdio.h> int *m() { int *p = 5; return p; } void main() { int *k = m(); printf("%d", k); }

What will be the output of the following C code? #include <stdio.h> #define COLD int main() { #ifdef COLD printf("COLD\t"); #undef COLD #endif #ifdef COLD printf("HOT\t"); #endif }

Which function definition will run correctly?

Which among the following is wrong for "register int a;"?

C preprocessor is conceptually the first step during compilation.

The #elif directive cannot appear after the preprocessor #else directive.

How is search done in #include and #include"somelibrary.h" normally or conventionally?

What will be the output of the following C code? #include <stdio.h> int main() { register int i = 10; int *p = &i; *p = 11; printf("%d %d\n", i, *p); }

What is the format identifier for "static a = 20.5;"?

What will be the sequence of allocation and deletion of variables in the following C code? #include <stdio.h> int main() { int a; { int b; } }

What will be the output of the following C code? #include <stdio.h> int main() { register const int i = 10; i = 11; printf("%d\n", i); }

#pragma exit is primarily used for?

Array sizes are optional during array declaration by using . . . . . . . . keyword.

Preprocessor feature that supply line numbers and filenames to compiler is called?

What will be the output of the following C code? #include <stdio.h> int i; int main() { extern int i; if (i == 0) printf("scope rules\n"); }

Which data type can be stored in register?

What will be the output of the following C code? #include <stdio.h> void main() { register int x = 5; m(); printf("x is %d", x); } void m() { x++; }

What will be the output of the following C code? #include <stdio.h> void m(); void n() { m(); } void main() { void m() { printf("hi"); } }

What will be the output of the following C code? #include <stdio.h> void main() { #define max 45 max = 32; printf("%d", max); }

What will be the output of the following C code? #include <stdio.h> #define MIN 0 #ifdef(MIN) #define MAX 10 #endif int main() { printf("%d %d\n", MAX, MIN); return 0; }

Which directory the compiler first looks for the file when using #include?

What will be the output of the following C code? #include <stdio.h> #define foo(m, n) m * n = 10 int main() { printf("in main\n"); }

What will be the output of the following C code? #include <stdio.h> enum m{JAN, FEB, MAR}; enum m foo(); int main() { enum m i = foo(); printf("%d\n", i); } int foo() { return JAN; }

What will be the output of the following C code? #include <stdio.h> #define MIN 0); #ifdef MIN #define MAX 10 #endif int main() { printf("%d %d\n", MAX, MIN return 0; }

What will be the output of the following C code? #include <stdio.h> int m() { int p = 5; return p; } void main() { int *k = m(); printf("%d", k); }

What will be the output of the following C code? #include <stdio.h> int main() { register int i = 10; int p = &i; p = 11; printf("%d %d\n", i, *p); }