Placement papers on C - Set 1

Placement papers on C - Set 1

1. What do the 'c' and 'v' in argv stands for?

'c' means argument control 'v' means argument vector
'c' means argument count 'v' means argument vertex
'c' means argument count 'v' means argument vector
'c' means argument configuration 'v' means argument visibility
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2. What do the following declaration signify?

int (*pf)();

pf is a pointer to function
pf is a function pointer.
pf is a pointer to a function which return int
pf is a function of pointer variable.
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3. What do the following declaration signify?

void *cmp();

cmp is a pointer to an void type.
cmp is a void type pointer variable
cmp is a function that return a void pointer.
cmp function returns nothing.
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4. In which numbering system can the binary number 1011011111000101 be easily converted to?

Decimal system
Hexadecimal system
Octal system
No need to convert
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5. Which bitwise operator is suitable for turning off a particular bit in a number?

&& operator
& operator
|| operator
! operator
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6. Which header file should be included to use functions like malloc() and calloc()?

memory.h
stdlib.h
string.h
dos.h
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7. What function should be used to free the memory allocated by calloc() ?

dealloc();
malloc(variable_name, 0)
free();
memalloc(variable_name, 0)
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8. What is the similarity between a structure, union and enumeration?

All of them let you define new values
All of them let you define new data types
All of them let you define new pointers
All of them let you define new structures
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9. Does there any function exist to convert the int or float to a string?

Yes
No
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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.
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