CP - Lab02 - Data Types & Operators

7/30/2019 CP - Lab02 - Data Types & Operators

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CS 161 - COMPUTER PROGRAMMING

Lab 02

Data Types & Arithmetic Operators

By Kiran Zahra

CS Department, Air University


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Group name: CProg-Fall2012-A

Group home page:

http://groups.yahoo.com/group/CProg-Fall2012-A

Group email:[email protected]

Group Details
http://groups.yahoo.com/group/CProg-Fall2012-Amailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]://groups.yahoo.com/group/CProg-Fall2012-Ahttp://groups.yahoo.com/group/CProg-Fall2012-Ahttp://groups.yahoo.com/group/CProg-Fall2012-Ahttp://groups.yahoo.com/group/CProg-Fall2012-Ahttp://groups.yahoo.com/group/CProg-Fall2012-A


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Lab Manuals


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1) Type Conversions

2) Practice Questions

1) Data Types

2)Arithmetic Operators3) Operator Precedence

4) cin, cout

Lab Brief


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Type Conversions


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Type Conversions : Integer and Float

rules that are used for implicit conversion of floating

point and integer values in C++ are;

An arithmetic operation between an integer and integer

always yields an integer result.

Operation between a real and real always yields a realresult

Operation between an integer and real always yields areal result.


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Type Conversions : Integer and Float

Example

int i;

float y;

i = 35.9;

y = 10;

As 35.9is offloat type it cannot be stored in iofinttype. In this case float is demoted to an int and then

value is stored in i. So the value ofiwill be 35.

Same will happen in yi.e. 10 will be promoted to 10.00

and then will be stored in y.


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Type Conversions

float a=1.0, b = 2.0, c = 10.0;

int s;

s = a * b * c / 100 + 32 / 4 3 * 1.1;

In the above example, some of the operands

are of type int and some of them are of typefloat. As we know during evaluation of the

expression int will be promoted to float andresult would be of type float. But when this floatvalue is assigned to s, it is again demoted to anint and then stored in s.


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Type Conversions

In some Cases, it may happen that the type of the

expression on the right hand side and the type of

the variable on the left hand side of the assignment

operator may not be same.

In that case the value of the expression is

promoted ordemoted depending on the type ofthe variable on left hand side of assignment

operator


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Lab Task 01

Take two integer numbers from user and apply

division on them. Store result in float type variable

and display result.

Take two float type numbers from user and apply

multiplication on them. Store result in integer type

variable and display result.


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Practice Questions


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Lab Task 02


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Lab Task 03

Write a program to calculate the following arithmetic

expressions. Analyze the result


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Lab Task 04

Write a program that stores the values of following

expressions in two different variables and analyze

the result. If both are same display Yes on console

otherwise display No


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Lab Task 05

Write a program to find number of bytes occupied

by different data types stated below:

int float

double

bool

char long int

Use sizeof() operator


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Lab Task 06


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Lab Task 07

Write a program that take a number from user and

calculates its square and cube. Suppose user entered 2,

output should be displayed as follows:

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Value 2Square 4

Cube 8

Documents

CP - Lab02 - Data Types & Operators