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11th Standard English Medium Computer Science Subject Introduction To C++ Book Back 3 Mark Questions with Solution Part - I updated Book back Questions

Published on: 13/05/2022

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Std: 11th Standard - Computer Science

chapter: - Book back Questions

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Questions:

Generic 3

5 x 3 = 15

What is the difference between “Run time error” and “Syntax error”?

Assume a=10, b=15; What will be the value of a^b?

Differentiate “=” and “==”.

Is C++ case sensitive? What is meant by the term “case sensitive”?

Describe the differences between keywords and identifiers?

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Answers Key:

Generic 3

5 x 3 = 15

Run time error	Syntax Error
1. A run time error occurs during the execution of a program. It occurs because of some illegal operation that takes place. 2. For example, if a program tries to open a file which does not exist, it results in a run-time error.	1. Syntax errors occur when grammatical rules of C++ are violated. 2. Example: if you type as follows, C++ will throw an error. cout << "Welcome to Programming in C++"

Operator	Operation	Result
^	a^b	00001010 a
		00001111 b
		00000101 a^b
a^b = (00000101)₂ = 5₁₀

=	==
" = "is an assignment operator	" == " is an equal to operator and it is a relational operator.
It is used to assign the value of variable or expression	It is used for comparison of both left and right side operands.
Eg: a = b (b value is assigned to a)	Eg: a==b (a value will be compared with b value).

C++ is a case sensitive programming language so, all the keywords must be in lowercase. Case sensitive means that the uppercase and lowercase letters are considered differently.

Keywords	Identifiers
Keywords are the reserved words which convey specific meaning to the C++ compiler.	Identifiers are the user-defined names given to different parts of the the C++ program.
They are the essential elements to construct C++ programs.	They are the fundamental building blocks of a program.
Most of the keywords are common to C, C++ and Java.	Every language has specific rules for naming the identifiers.