C MCQs for placement and exams - Set 1

C MCQs for placement and exams - Set 1

1.) What do the 'c' and 'v' in argv stands for?
a.) 'c' means argument control 'v' means argument vector
b.) 'c' means argument count 'v' means argument vertex
c.) 'c' means argument count 'v' means argument vector
d.) 'c' means argument configuration 'v' means argument visibility
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2.) What do the following declaration signify?

int (*pf)();

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

void *cmp();

a.) cmp is a pointer to an void type
b.) cmp is a void type pointer variable
c.) cmp is a function that return a void pointer
d.) cmp function returns nothing
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4.) In which numbering system can the binary number 1011011111000101 be easily converted to?
a.) Decimal system
b.) Hexadecimal system
c.) Octal system
d.) No need to convert
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5.) Which bitwise operator is suitable for turning off a particular bit in a number?
a.) && operator
b.) & operator
c.) || operator
d.) ! operator
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6.) Which header file should be included to use functions like malloc() and calloc()?
a.) memory.h
b.) stdlib.h
c.) string.h
d.) dos.h
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7.) What function should be used to free the memory allocated by calloc() ?
a.) dealloc();
b.) malloc(variable_name, 0)
c.) free();
d.) memalloc(variable_name, 0)
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8.) What is the similarity between a structure, union and enumeration?
a.) All of them let you define new values
b.) All of them let you define new data types
c.) All of them let you define new pointers
d.) 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?
a.) Yes
b.) No
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10.) What is the purpose of fflush() function.
a.) flushes all streams and specified streams
b.) flushes only specified stream
c.) flushes input/output buffer
d.) flushes file buffer
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