CBSE Class XI :- Operators in C++

Aug 21, 2013Download as ppt, pdf1 like1,398 views

This document discusses various operators in C++. It describes arithmetic operators like unary plus and minus. It also covers increment and decrement operators, and explains the prefix and postfix versions. Relational operators compare values and return 1 for true or 0 for false. Logical operators include AND, OR, and NOT, and precedence rules are provided. The conditional or ternary operator is described. Other operators discussed are the sizeof compile time operator and comma operator.

OperatorsOperators
inin
C ++C ++
Made By:- Pranav GhildiyalMade By:- Pranav Ghildiyal
Class :- ‘XI’ ‘B’Class :- ‘XI’ ‘B’

ARITHEMATIC OPERATORS
PLEASE
NOTE :- C+
+ is case-
sensitive
a , A both
are
different
Unary plus
A= 5A= 5
Unary minus
-A = -5-A = -5

INCREMENT AND DECREMENT OPERATORINCREMENT AND DECREMENT OPERATORINCREMENT AND DECREMENT OPERATORINCREMENT AND DECREMENT OPERATOR
• These operators increase or decrease the
value of the operand by 1
• Increment increases by 1 while the decrement
decreases by 1
PREFIX VERSION
It follows the change then use rule i.e., it
first changes the value of the operand and
then use the new value to evaluate the
expression
POSTFIX VERSION
It follows the use then change rule i.e., it first
uses the new value of the operand in
evaluating the expression and then changes
the operands value

.
Operators that act upon two operands
are known as binary operators

Relational operators refer to the relationship that values can have with one another .
Relational operators don’t work with string. We can compare numbers and characters with
them. If the comparison results in true , the relational operators results in the value 1 else it
results in the value 0 (comparison results in false).

LOGICAL OPERATORSLOGICAL OPERATORS
Logical AND
The resulting expressions
gives the value 1 only if
both the original operands
are true
Logical OR
The resulting expressions
gives the value 1 if either
of the original operands
is true
Logical NOT
It is a unary operator. It
reverses the truth value of the
expression and gives true if
the expression is false
11 Logical OR and Logical AND has lower precedence than relational operatorsLogical OR and Logical AND has lower precedence than relational operators
22 Logical NOT has higher precedence over any relational or arithimatic operatorLogical NOT has higher precedence over any relational or arithimatic operator
Facts about operatorsFacts about operators

CONDITIONAL OPERATOR ( ? : ) OR TERNARY OPERATORCONDITIONAL OPERATOR ( ? : ) OR TERNARY OPERATORCONDITIONAL OPERATOR ( ? : ) OR TERNARY OPERATORCONDITIONAL OPERATOR ( ? : ) OR TERNARY OPERATOR

SOME OTHER OPERATORSSOME OTHER OPERATORS
COMPILE TIME OPERATOR
• It returns the length (in
bytes) of the variable / type
specified
COMMA OPERATOR
IntegerInteger 2 Bytes2 Bytes
CharacterCharacter 1 Bytes1 Bytes
FloatFloat 4 Bytes4 Bytes
DoubleDouble 8 Bytes8 Bytes
• It is used to string together
several group of expressions.
The result of the rightmost
expression becomes the value
of the total comma seprated
expression

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The document defines various terms in 3 sentences or less: The document defines various terms such as quirequire for 24 sheets of paper together, ewerewer for a large water jug, and gavels for the hammer used by judges. It also defines terms like aisle for the passageway between seats, armoire for large wardrobes, and layover for short stays between journeys. Finally, it provides definitions for words including tuffs for rocks from volcanic ash, condiment for substances that add flavor to food, and parables for stories with morals.

CBSE Class XII Comp sc practical filePranav Ghildiyal

1. The document contains details of Pranav Ghildiyal, a class XII student. It includes a table of contents listing 24 programs with page numbers. 2. The programs cover concepts like arrays, structures, classes, inheritance, file handling, stacks, queues and more. Algorithms covered include sorting, searching and linked lists. 3. The document serves as an index for various C++ programs written by the student to demonstrate different concepts and data structures.

CBSE Class XII physics practical project on Metal detectorPranav Ghildiyal

This document is a project report submitted by Pranav Ghildiyal to his school, Kendriya Vidyalaya B.E.G, for the 2013-2014 academic year. The project is about the circuit diagram and working of a metal detector. It provides background information on the history and development of metal detectors from their early crude designs to modern portable devices. It describes the different types of metal detectors including Very Low Frequency, Pulse Induction, and Beat Frequency Oscillator detectors. Potential uses of metal detectors are also listed.

CBSE Class XII practical project on Rayon threadsPranav Ghildiyal

This document is a student project report on preparing a sample of cuprammonium rayon threads from filter paper. It includes an introduction to rayon and the cuprammonium process, a list of required apparatus and chemicals, the procedure, conclusions and bibliography. The student successfully prepared a sample of cuprammonium rayon threads by dissolving filter paper pieces in a solution of copper sulfate and ammonia, then extruding the viscous solution through a syringe into an acid bath to form fibers. Precautions are noted for the preparation and fiber formation.

Shopping mallPranav Ghildiyal

This document is a project report submitted by Pranav Ghildiyal of class XII B at Kendriya Vidyalaya B.E.G. for the 2013-2014 session. The project involves creating a C++ program to manage a shopping store database using classes and file handling. The report includes an acknowledgements section, certificate, table of contents, explanation of header files used, the coding of the program, limitations, requirements, and bibliography.

CBSE Class X Rise of nationalism in europePranav Ghildiyal

H1 n1 swine fluPranav Ghildiyal

This document is a science project about diseases, specifically H1N1 Swine Flu. It includes an introduction to diseases and common diseases like cough and cold. It then discusses H1N1 Swine Flu in more detail, covering its introduction, outbreaks including the Spanish Flu in 1918 and Fort Dix outbreak in 1976, causes, symptoms, differences from a cold, precautions, and treatment. It also lists recent news and diseases observed locally.

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Poverty is the lack of basic human needs like nutrition, healthcare, education, clothing and shelter that people are unable to afford. It is a major challenge due to causes like corruption that are increasing. Vulnerable groups have a high risk of falling into poverty. However, poverty can be reduced through joint efforts of people and the government, including existing schemes that provide aid, employment opportunities, and setting poverty lines.

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Sound is a travelling wave that is an oscillation of pressure transmitted through a medium. Humans can hear sounds between 20-20,000 Hz. Sound speed depends on the medium and is faster in solids than liquids and gases due to closer particle packing. Noise is an unwanted sound that can cause hearing damage at high volumes. The ear detects sound waves which are then transmitted to the brain. Properties of sound waves include wavelength, amplitude, and frequency which determine pitch. Ultrasound has a frequency above human hearing range.

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This document provides information about various natural resources. It discusses key natural resources like water, air, plants, fossil fuels, rocks, minerals, forestry, soil, oceans, lakes, groundwater, and rivers. For each resource, it provides a brief definition and relevant details. It emphasizes that natural resources are extremely important for human survival and that we must work to save and conserve them.

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Chemical Reaction And Equations 1. A chemical reaction is a process where reactants are converted into products. An equation is a symbolic representation of a reaction. 2. Key parts of a chemical equation include reactants on the left side of the arrow, products on the right side, and coefficients that indicate mole ratios. 3. There are several types of chemical reactions including combination, decomposition, displacement, and double displacement. Oxidation-reduction reactions involve the transfer of electrons between reactants.

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An arithmetic progression is a sequence of numbers where each term after the first is calculated by adding a fixed number, called the common difference, to the previous term. The nth term can be calculated as an = a + (n - 1)d, where a is the first term and d is the common difference. An arithmetic progression can be either finite, with a fixed number of terms, or infinite, with an unlimited number of terms. The sum of the first n terms of an arithmetic progression is given by Sn = n/2(2a + (n-1)d).

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The document discusses inequalities and their solutions. It defines strict and slack inequalities using symbols like <, >, ≤, and ≥. Examples of linear inequalities are given and it is explained that the number line can be used to show the solution set, with open and closed intervals depending on the inequality symbols. The rules for solving linear inequalities on a number line are presented. Types of graphs are introduced, including using graphs to solve systems of inequalities by plotting points that satisfy both inequalities and shading the common region.

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