C Programming Online Quiz Test2

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1. What is (void*)0?
Representation of NULL pointer	Representation of void pointer
Error	None of above

2. In which header file is the NULL macro defined?
stdio.h	stddef.h
stdio.h and stddef.h	math.h

3. A pointer is ___?
A keyword used to create variables	A variable that stores address of an instruction
A variable that stores address of other variable	All of the above

4. The keyword used to transfer control from a function back to the calling function is _____?
switch	goto
go back	return

5. In C, if you pass an array as an argument to a function, what actually gets passed?
Value of elements in array	First element of the array
Base address of the array	Address of the last element of array

6. Which of the following function is more appropriate for reading in a multi-word string?
printf();	scanf();
gets();	puts();

7. What will the function rewind() do?
Reposition the file pointer to a character reverse	Reposition the file pointer stream to end of file
Reposition the file pointer to begining of that line	Reposition the file pointer to begining of file

8. Input/output function prototypes and macros are defined in which header file?
conio.h	stdlib.h
stdio.h	dos.hkk

9. What is stderr ?
standard error	standard error types
standard error streams	standard error definitions

10. What is the purpose of fflush() function.
flushes all streams and specified streams	flushes only specified stream
flushes input/output buffer	flushes file buffer

11. Which of the following cannot be checked in a switch-case statement?
Character	Integer
Float	enum

12. What will be output when you will execute following c code? #include void main(){ int movie=1; switch(movie<<2+movie){ default:printf("3 Idiots"); case 4: printf(" Ghajini"); case 5: printf(" Krrish"); case 8: printf(" Race"); } } Choose all that apply:
3 Idiots Ghajini Krrish Race	Race
Krrish	Ghajini Krrish Race

13.What will be output of following program? #include int main(){ int a = 320; char *ptr; ptr =( char *)&a; printf("%d ",*ptr); return 0; }
2	320
64	Compilation error

14.What will be output of following program? #include int main(){ char far *p =(char far *)0x55550005; char far *q =(char far *)0x53332225; *p = 80; (*p)++; printf("%d",*q); return 0; }
80	81
82	Compilation error

15.What will be output of following program? #include #include int main(){ register a = 25; int far *p; p=&a; printf("%d ",*p); return 0; }
25	4
Address	Compilation error

16. What will be output of following program? #include int main(){ int a = 10; void *p = &a; int *ptr = p; printf("%u",*ptr); return 0; }
10	Address
2	Compilation error

17. What will be output when you will execute following c code? #include void main(){ char arr[7]="Network"; printf("%s",arr); } Choose all that apply:
Network	N
Garbage value	Compilation error

18.What will be output when you will execute following c code? #include int main(){ const int *p; int a=10; p=&a; printf("%d",*p); return 0; }
0	10
Garbage value	Any memory address

19. #include #include void main() { short int a=5; clrscr(); printf("%d"+1,a); getch(); } What will output when you compile and run the above code?
6	51
d	Compiler error

20. What will be output when you will execute following c code? #include int main(){ const int *p; int a=10; p=&a; printf("%d",*p); return 0; } Choose all that apply:
0	10
Garbage value	Any memory address