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Home Questions & Answer Technology Questions & Answers C programming Questions & Answers

C programming Questions & Answers (Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)

What is wild pointer in c
Aa pointer which we need to write in future
Ba pointer which has bad naming convention
Ca pointer which has no limit
Da point which has not initialized

Size of void pointer is
A1 byte
B2 byte

C4 byte
D8 byte

Any type of modification on the parameter inside the function will reflect in actual variable value can be related to
Acall by value
Bcall by reference

Cboth of above
Dnone of above
EAnswer And Expla

What is prototype of a function in C
AIt is the return type of a function
BIt is the return data of the function
CIt is declaration of a function

DIt is a datatype

Disadvantage of array in C is
AWe can easily access each element
BIt is necessary to declare too many variables
CIt can store only one similar type of data

DNone of above

Wild pointer in C
Aif pointer is pointing to a memory location from where variable has been deleted
Bif pointer has not been initialized

Cif pointer has not defined properly
Dif pointer pointing to more than one variable

What is dangling pointer in c
Aif pointer is pointing to a memory location from where variable has been deleted

Bif pointer is assigned to more than one variable
Cif pointer is not defined properly
Dnone of above

Which is invalid name of identifier
Aworld
Baddition23
Ctest_name

Dfactorial

Adding to a pointer that points to an array will
ACause an error
BIncrease the value of the element that the pointer is pointing to
CCause the pointer to point to the next element in the array

DNone of above

What is true about fputs function
Awrite to a file
Btakes two parameters
Crequires a file pointer
Dall of above

What is correct order of precedence in C
AAddition, Division, Modulus
BAddition, Modulus, Division
CMultiplication, Substration, Modulus
DModulus, Multiplication, Substration

A variable in c
Amust have a valid datatype
Bmust have a name starting with a character
CAll of above

printf() belongs to which library of c
Astdlib.h
Bstdio.h

Cstdout.h
Dstdoutput.h

UML meaning is
AUnique modeling language
BUnified modeling language

CUnified modern language
DUnified master laqnguage

Structures can be used
Ato hold different datatypes
Bhave pointers to structures
Cto assign to one another
Dall of above

A member is a
AVariable in a structure

BDatatype of structure
CStructure pointer
DNone of above

To access the members of structure which symbol is used
A*
B-
C,
D.

What among following is true about stack
Astack cannot reuse its memory
Ball elements are of different datatypes
Call operation done at one end

Dnone of above

Difference between structure and union is
AWe can define functions within structures but not within a union
BWe can define functions within union but not within a structure
CThe way memory is allocated

DThere is no difference

If (*p) and **p is same
ANo

BYes

What is the purpose of getc()
Aread a character from STDIN
Bread a character from a file

Cread all file
Dread file random

Which operator has the highest priority
A()

The compiler in C ignores all text till the end of line using
A//

rand() function returns
Afloat value
Binteger value

Cany type
Dnone of above

Out of following program :
float x = 10.7;
int i;

i = (int) x;
print i;
Anull
Berror
C10

Dgarbage value
EAnswer And Ex

What is use of in c
Aused to insert a vertical tab
Bused to insert a tab
Cplaces cursor at the end of line
Dplaces cursor at the start of line

C48
D132

Which of the following below is/are valid C keywords
Ainteger
Bint

Cnull
Dnone of above

If include files can be nested
AYes

BNo

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