Question 1

What is the default return-type of getchar()?

Accepted Answer

A) char 
B) int 
C) char * 
D) reading character doesn't require a return-type

Question 2

What is the purpose of sprintf?

Accepted Answer

A) It prints the data into stdout 
B) It writes the formatted data into a string 
C) It writes the formatted data into a file 
D) None of the mentioned

Question 3

What error will generate if the read and write parameters are not separated by commas?

Accepted Answer

A) run-time error 
B) compile error 
C) logical error 
D) no error

Question 4

What is the use of getchar()?

Accepted Answer

A) The next input character each time it is called 
B) EOF when it encounters end of file 
C) The next input character each time it is called EOF when it encounters end of file 
D) None of the mentioned

Question 5

What is the purpose of va_end?

Accepted Answer

A) Cleanup is necessary 
B) Must be called before the program returns 
C) Cleanup is necessary & Must be called before the program returns 
D) None of the mentioned

Question 6

If the user enters 1 s 3.2, what value will be returned by the scanf()?scanf("%d %f %c", &a, &b, &c);

Accepted Answer

A) 1 
B) 2 
C) 3 
D) no return value

Question 7

The syntax to print a % using printf statement can be done by ________

Accepted Answer

A) % 
B) \% 
C) '%' 
D) %%

Question 8

What is the qualifying input for the type specifier G?

Accepted Answer

A) floating point numbers 
B) floating point numbers in exponential format 
C) floating point numbers in the shorter of exponential format 
D) not a type specifier

Question 9

The syntax of printf() function is printf("control string", variable list) ;what is the prototype of the control string?

Accepted Answer

A) %[flags][.precision][width][length]specifier 
B) %[flags][length][width][.precision]specifier 
C) %[flags][width][.precision][length]specifier 
D) %[flags][.precision][length][width]specifier

Question 10

Choose the correct description for control string %-+7.2f.

Accepted Answer

A) - means display the sign, + means left justify, 7 specifies the width and 2 specifies the precision 
B) - means left justify, + means display the sign, 7 specifies the width and 2 specifies the precision 
C) - means display the sign, + means left justify, 7 specifies the precision and 2 specifies the width 
D) - means left justify, + means display the sign, 7 specifies the precision and 2 specifies the width

Question 11

_____ is an optional argument that gives the maximum number of characters to be read.

Accepted Answer

A) modifiers 
B) width 
C) precision 
D) length

Question 12

Which of the following data-types are promoted when used as a parameter for an ellipsis?

Accepted Answer

A) char 
B) short 
C) int 
D) none of the mentioned

Question 13

What does scanf() function return?

Accepted Answer

A) Number of successfully matched and assigned input items 
B) Nothing 
C) Number of characters properly printed 
D) Error

Question 14

What error will be generated on using incorrect specifier for the datatype being read?

Accepted Answer

A) compile error 
B) run-time error 
C) logical error 
D) no error

Question 15

Which of the following statement is true?

Accepted Answer

A) The symbolic constant EOF is defined in  
B) The value is -1 
C) The symbolic constant EOF is defined in  & value is -1 
D) Only value is -1

Question 16

A conversion specification %7.4f means ____________

Accepted Answer

A) print a floating point value of maximum 7 digits where 4 digits are allotted for the digits after the decimal point 
B) print a floating point value of maximum 4 digits where 7digits are allotted for the digits after the decimal point 
C) print a floating point value of maximum 7 digits 
D) print a floating point value of minimum 7 digits where 4 digits are allotted for the digits after the decimal point

Question 17

If the user enters 1 3.2 s, what value will be returned by the scanf()?scanf("%d %f %c", &s1, &s2, &s3);

Accepted Answer

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

Question 18

The parameter control string in the printf () is a C String that contains text to be __________

Accepted Answer

A) taken from a standard output device 
B) written on to the standard output device 
C) received from the standard output device 
D) nothing can be said

Exam 2: Managing Io Operations

What is the default return-type of getchar() ?