Page 61 - DCAP404 _Object Oriented Programming

Object-oriented Programming

Notes Keywords: Explicitly reserved identifiers that cannot be used as names for the program variables
or other user defined program elements.
Operands: The data items that operators acted upon all called operands.

Scope Resolution Operator: This operator enables a program to access a global variable when a
local variable of the same name is in scope.
String Constant: Sequence of characters enclosed in double quotes.

Tokens: A collections of characters, much live a word in English language. The smallest individual
unit in a program.

2.9 Review Questions

1. Are ‘break‘ and ‘continue‘ bad programming practices? Analyze.
2. Does the last element in a loop deserve a separate treatment? Why or why not?
3. Which useful alternative control structures do you know? Explain with an example.
4. Does C++ provide any trinary operator? If yes, explain its working.
5. Convert the following while loop into for loop.

int i = 10;
while(i < 20)
{

cout << i;
(i++)++;
}
6. In control structure switch-case what is the purpose of default in C++?
7. Write a C++ program to display and add five numbers.

8. What is the difference between dynamic and reference declaration of variables?
9. What are operators? What are their functions? Give examples of some unary and binary
operators.

10. What are keywords? Can keywords be used as identifiers?

Answers: Self Assessment

1. Boldface 2. Name
3. Identifier 4. Operands
5. Variable 6. Numeric

7. Double 8. Bit
9. If-else statement 10. While
11. Break 12. Current
13. Block 14. Pointer

15. Variable

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