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11th Standard English Medium Computer Science Subject Introduction To C++ Creative 5 Mark Questions with Solution Part - I

Published on: 29/06/2021

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Std: 11th Standard - Computer Science

chapter: - Creative Questions

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Questions:

Generic 5

5 x 5 = 25

Write a program to find the difference between Simple Interest and Compound Interest when Principal, Rate and Time are given, (principal = 500, Rate = 10, Time = 2).

Explain the punctuators used in C++.

Explain logical bitwise operator with an example.

Explain increment and decrement operator with an example.

Write the benefits of C++;

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Answers Key:

Generic 5

5 x 5 = 25

#include < iostream.h >
#include< math.in >
void main ( )
{
int p, t;
double r; si, amt, ci, d;
d=0;
p = 5000; r=10; t -'2;
amt = p * (pow (l +r/100,t);
ci = amt - p;
si=p*r*t/100;
d=ci-si;
cout << "The compount interest=" << (float) ci << endl";
cout << "The simple interest=" << si << endl";
cout << "The difference between C.I and SI=" << (float) d << end1";
}

Punctuators are symbols, which are used as delimiters, while constructing a C++ program. They are also called as "Separators". The following punctuators are used in C++; most of these symbols are very similar to C and Java.

Separator	Description
Curly braces { }	Opening and closing curly braces indicate the start and the end of a block of code. A block of code containing more than one executable statement. These statements together are called as "compound statements".
Parenthesis ( )	Opening and closing parenthesis indicate function calls and function parameters.
Square brackets [ ]	It indicates single and multidimensional arrays.
Comma,	It is used as a separator in an expression.
Semicolon ;	Every executable statement in C++ should terminate with a semicolon.
Colon:	It is used to label a statement.
Comments // /* */	All statements that begin with II are treated as comments. Comments are simply ignored by compilers. i.e., the compiler does not execute any statement that begins with a // // Single line comment /* */ Multiline comment.

(i) Logical bitwise operators:
&Bitwise AND (Binary AND)
I Bitwise OR (Binary OR)
^ Bitwise Exclusive OR (Binary XOR)
1. Bitwise AND (&) will return 1 (True) if both the operands are having the value 1 (True); Otherwise, it will return 0 (False)
2. Bitwise OR ( I) will return 1 (True) if any one of the operands is having a value 1 (True); It returns 0 (False) if both the operands are having the value 0 (False).
3. Bitwise XOR (") will return 1 (True) if only one of the operand is having a value 1 (True). If both are True or both are False it will return 0 (False).
The truth table for bitwise operators (AND, OR, XOR).

A	B	A&B	A\|B	A^B
1	1	1	1	0
0	0	0	1	1
0	1	0	1	1
0	0	0	0	0

Example:
If a = 65, b=15
Equivalent binary values of 65 = 0100 0001;
15 = 0000 1111

Operator

Operation

Result

a&b

a	1	0	0	0	1
b	0	1	1	1	1
a&b	0	0	0	0	1

(a&b) = 0000 0001₂= 1₁₀

alb

a	1	0	0	0	1
b	0	1	1	1	1
a\|b	1	1	1	1	1

(alb) = 01001111₂= 79₁₀

a^b

a	1	0	0	0	1
b	0	1	1	1	1
a^b	1	1	1	1	0

(a^b) = 01001110₂= 78₁₀

Operator	Operation	Example (Assume n=2; what will be value of n)
Operator	Operation	Prefix	Postfix
++	Increment	++n;	n++;
		n=n+1; Value of n;	Value of n; n=n+1;
		Value of n = 3	Value of n = 2
--	Decrement	--n;	n--;
		n=n-1; Value of n;	Value of n; n=n-1;
		Value of n = 1	Value of n = 2

(i) C++ is highly portable language and is often the language of choice for multi-device, multi-platform app development.
(ii) C++ is an object-oriented programming language and includes classes, inheritance, polymorphism, data abstraction and encapsulation.
(iii) C++ has a rich function library
(iv) C++ allows exception handling, and function overloading which are not possible in C.
(v) C++ is a powerful, efficient and fast language. It finds a wide range of applications from GUI applications to 3D graphics for games to real-time mathematical simulations.