Test Your Programming Skills with Safcode!

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Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 20
Each question carry 10 mark , no negative marking"

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Quiz Start

1. which of the following function can be used to deallocated memory when it is no longer needed? Free()
None of these
Calloc()
Malloc()

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2. Which of the following is not a reserved word in C langauge? for
switch
do
goto

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3. What is the default return type of a function? float
int
char
void

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4. What is the range of double data type for a 16-bit compiler? -1.7e-328 to +1.7e-328
-1.7e-348 to +1.7e-348
-1.7e-328 to +1.7e-328
-1.7e-308 to +1.7e-308

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5. Calling one function from within another is said to be __________ of function calls. None of them
Nesting
Inner
Outer

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6. What is the length null string? 0
1
4
3

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7. A __________ group together a number of data items, which need not be of the same data type. Array
Structure
Block
Variable

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8. Who developed C languages? Von Neuman
Ken Thomson
Dennis Ritchie
peter Norton

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9. To use strcat() function, the ________ header file must be included in the program. iostream.h
conio.h
string.h
stdio.h

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10. A variable declared with ____ modifier can retain its value during function calls. const
extern
static
volatile

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11. Which operator is used to check if a particular bit is on or off? ||
%
!
&

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12. Which of the following has a global scope in the program? Constants
Local variables
Macros
Formal parameters

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13. Every C program has access to which of the following files? all of the above
stdin
stdout
stderr

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14. Which of the following is not a storage class? Static
Extern
Auto
Register

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15. Which of the following functions can be used to increase the size of dynamically allocated array? calloc()
malloc()
memadjust()
realloc()

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16. Which of the following statements about functions is false? A function can have multiple return statements with different return values
Functions cannot return more than one value at a time
The maximum number of arguments a function can take is 128
The main() function can be called recursively

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17. Pointers can be used to achieve? call by name
call by procedure
call by function
call by reference

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18. ________ form a base of any C program. Struct
Instruction
All of them
Code of block

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19. How much memory is required to store a value of type double? 10 bytes
4 bytes
8 bytes
6 bytes

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20. To use strcat() function, the __________ header file must be included in the program. conio.h
stdio.h
math.h
string.h

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