Question 1

What will the given code result in printf("
 you are"awesome " ");?

Accepted Answer

A)  compile error
B)  run-time error
C)  you are "awesome"
D)  you are awesome C

Question 2

In a variable length argument function, the declaration "…" can _______

Accepted Answer

A)  Appear anywhere in the function declaration
B)  Only appear at the end of an argument list
C)  Nothing
D)  None of the mentioned B

Question 3

What does the following command line signify? prog1 prog2

Accepted Answer

A)  It runs prog1 first, prog2 second
B)  It runs prog2 first, prog1 second
C)  It runs both the programs, pipes output of prog1 to input of prog2
D)  It runs both the programs, pipes output of prog2 to input of prog1 C

Question 4

Explain the format string "%5d%s %c"

Accepted Answer

A)  five characters as a decimal integer, then reads the remaining as a string and then scans the first non-whitespace character
B)  compile error
C)  run-time error
D)  read first five characters as a decimal and ignore the rest

Question 5

Which of the following is NOT a delimiter for an input in scanf?

Accepted Answer

A)  Enter
B)  Space
C)  Tab
D)  None of the mentioned

Question 6

For a typical program, the input is taken using _________

Accepted Answer

A)  scanf
B)  Files
C)  Command-line
D)  All of the mentioned

Question 7

________is used to define the type and the interpretation of the value of the corresponding argument.

Accepted Answer

A)  precision
B)  specifiers
C)  flags
D)  decimal

Question 8

What does the C statement given below says? scanf("%7s",ch);

Accepted Answer

A)  read string with minimum 7 characters.
B)  read string with maximum 7 characters
C)  read string exactly to 7 characters
D)  read string with any number of characters

Question 9

Select the correct value of i from given options i=scanf("%d %d", &a, &b);

Accepted Answer

A)  1
B)  2
C)  3
D)  No value assigned

Question 10

For floating point numbers, the precision flag specifies the number of decimal places to be printed. When no precision modifier is specified, printf() prints _______

Accepted Answer

A)  six decimal positions
B)  five decimal positions
C)  four decimal positions
D)  three decimal positions

Question 11

What is the return value of putchar()?

Accepted Answer

A)  The character written
B)  EOF if an error occurs
C)  Nothing
D)  Both character written & EOF if an error occurs

Question 12

Which among the following is the odd one out?

Accepted Answer

A)  printf
B)  fprintf
C)  putchar
D)  scanf

Question 13

If by mistake you specify more number of arguments, the excess arguments will ____________

Accepted Answer

A)  be ignored
B)  produce compile error
C)  produce run-time error
D)  produce logical error

Question 14

scanf() is a predefined function in______header file.

Accepted Answer

A)  stdlib. h
B)  ctype. h
C)  stdio. h
D)  stdarg. h

Question 15

Output justification such as decimal point, numerical sign, trailing zeros or octal are specified.

Accepted Answer

A)  specifier
B)  flags
C)  precision
D)  decimal

Question 16

What is the prototype of scanf function?

Accepted Answer

A)  scanf("controlstring",arg1,arg2,arg3,….,argn) ;
B)  scanf("control string", variable list) ;
C)  scanf(" varible list,", control string) ;
D)  scanf("arg1,arg2,arg3,….,argn", control string) ;

Question 17

Escape sequences are prefixed with ________

Accepted Answer

A)  %
B)  /
C)  "
D)  None of the mentioned

Question 18

The type va_list in an argument list is used ________

Accepted Answer

A)  To declare a variable that will refer to each argument in turn;
B)  For cleanup
C)  To create a list
D)  There is no such type

Question 19

What action is carried out by scanf if a user enters any blank spaces, tabs, and newlines?

Accepted Answer

A)  consider as input
B)  ignores it
C)  produces error
D)  nothing can be said

Question 20

If the conversion characters of int d, i, o, u and x are preceded by h, it indicates?

Accepted Answer

A)  A pointer to int
B)  A pointer to short
C)  A pointer to long
D)  A pointer to char

Exam 2: Managing Io Operations

What will the given code result in printf("\n you are\"awesome \" ") ;?