CS201 Midterm Past Papers by Tariq

1. Overflow condition occurs when we try to assign a value to a variable which is

Greater than its maximum size

Within its range Equal to its size Less than its maximum size

2. The _break_______ statement interrupts the flow of control.

Switch/loop

continue goto break

Q3. Which of the following operators is used to access the value of variable pointed by a pointer?

* operator

-> operator && operator & operator

4. Which of the following is not a reserve word for data types in standard C/C++? int

float

real

double

5. To assigned a value to a character type variable, ________ are used around the value.

parenthesis ( )

single qoutes ' '

double qoutes " " curly braces { }

6. When x = 7; then the expression x%= 2; will calculate the value of x as

Q7. What is the highest legal index for the following array?

int arr[4]

Q8. For which array, the size of the array should be one more than the number of elements in an array?

int double float

char

9. In programming, comments are used to explain the functioning of the _______ . Debugger

Editor

Program

Linker

10. Operating System is a type of a/an ___________.

application software

system software

computer language interpreter

11. _________ are very good tools for code reuse.

operators loops

functions

variables

12. Identify the correct option which is used for calling the function int square (int *).

square(int &num) ;

square(&num) ;

square(*num) ; square(num) ;

13. The _________ statement allows us to select from multiple choices based on a set of fixed values for a given expression.

switch

break continue goto

14. The file-open mode __________ is used to open a file for output and move to the end of the file.

ios::out

ios::app

ios::trunc ios::binary

15. A function’s single most important role is to ____________.

give a name to a block of code increases program size

accept arguments and provide a return value

help in organizing a program into conceptual units

16. In C++, Integer calculation occurs in _____ bytes.

1 byte 2 bytes

4 bytes

8 bytes

17. The function write() takes ___________________as parameter(s).

String of pointer type String of variable lengths, no. of bytes to be read and flags Pointer array of characters and a delimiter

String and no. of bytes to be written

18. A ________ name includes a primary name and an optional period with an extension.

File

Disk Data Database

19. In case of pass by reference, _______________.

The values of the variables are passed to the function so that it can manipulate them

The location of variable in memory is passed to the function

The function declaration should contain ampersand (&) in its type declaration Temporary variables are created to store the values of the variables passed

Q20. There is a pointer variable named ptr of type float then address of which type of variable the ptr will store in it?

int

float

char double

21. If char Array[7]; is a character array then write the statement which store a character at Fifth location of this array.02

Answer: Array[4] = ‘a’;

22. What happens, if we open an existing file using the default output mode and write the data into the file?02

It will start writing from start of file. And will overwrite existing data/text.

23. Perform left shift operation on a binary number 0101 and write the result in binary and decimal.03

Binary = 1000

Decimal = 8

Q25. Write down the output of the code given below?

#include <iostream> using namespace std;

union Num

int ValueI; float ValueF; double ValueD; char ValueC;

void main()

// Optional union keyword // ValueI = 100 Num TestVal = {100};

cout<<"\nInteger = "<< TestVal. ValueI<<endl; TestVal. ValueF = 2.123; cout<<" Float = "<< TestVal. ValueF<<endl; cout<<" Uninitialzed double = "<< TestVal. ValueD<<endl; cout<<" Some rubbish???"<<endl; TestVal. ValueC = 'U';