Typecasting and its importance in C++

<h1>Typecasting and its importance in C++</h1>Author: <a title="james edward" href="http://www.articlesbase.com/authors/james-edward/281029.htm">james edward</a> Type Casting in C++ Casting means you change the representation of a variable by changing its type to a different one. In order to type-cast a simple object to another you use the traditional type casting operator. For example, to cast a floating point number of type 'double' to an integer of type 'int'. <a href="http://www.studiesinn.com">Type Casting</a> causes the program to treat a variable of one type as though it contains data of another type. Normally, this is used with a collection of pointers (addresses) to specify how to interpret the data. When casting is not used with object pointers, it normally means to simply copy the data between incompatible types without converting the data or flagging an error. The figure lists some examples for type casting of operators. Format: Type name (Expression); Let us see the concept of type casting in C++ with a small example: #include <iostream.h> void main() { int a; float b,c; cout<< “Enter the value of a:”; cin>>a; cout<< “n Enter the value of b:”; cin>>b; c = float(a)+b; cout<<”n The value of c is:”<<c; } The output of the above program is Enter the value of a: 10 Enter the value of b: 12.5 The value of c is: 22.5 In the above program a is declared as integer and b and c are declared as float. In the type conversion statement namely c = float(a)+b; The variable a of type integer is converted into float type and so the value 10 is converted as 10.0 and then is added with the float variable b with value 12.5 giving a resultant float variable c with value as 22.5 Read more on typecasting in C++ visit <a href="http://www.studiesinn.com" title="http://www.studiesinn.com"><a target="_blank" href="http://www.studiesinn.com">http://www.studiesinn.com</a></a>About the Author: Expert in Computer Programming Languages and Web Development and Designing Technologies.Article Source: <a href="http://www.articlesbase.com/">ArticlesBase.com</a> - <a href="http://www.articlesbase.com/programming-articles/typecasting-and-its-importance-in-c-1434552.html" title="Typecasting and its importance in C++">Typecasting and its importance in C++</a>

Type Casting in C++
Casting means you change the representation of a variable by changing its type to a different one. In order to type-cast a simple object to another you use the traditional type casting operator. For example, to cast a floating point number of type 'double' to an integer of type 'int'.

Type Casting causes the program to treat a variable of one type as though it contains data of another type. Normally, this is used with a collection of pointers (addresses) to specify how to interpret the data. When casting is not used with object pointers, it normally means to simply copy the data between incompatible types without converting the data or flagging an error. The figure lists some examples for type casting of operators.

Format: Type name (Expression);

Let us see the concept of type casting in C++ with a small example:

#include <iostream.h>
void main()
{
int a;
float b,c;
cout<< “Enter the value of a:”;
cin>>a;
cout<< “n Enter the value of b:”;
cin>>b;
c = float(a)+b;
cout<<”n The value of c is:”<<c;
}

The output of the above program is

Enter the value of a: 10
Enter the value of b: 12.5
The value of c is: 22.5

In the above program a is declared as integer and b and c are declared as float. In the type conversion statement namely

c = float(a)+b;

The variable a of type integer is converted into float type and so the value 10 is converted as 10.0 and then is added with the float variable b with value 12.5 giving a resultant float variable c with value as 22.5

Read more on typecasting in C++ visit http://www.studiesinn.com

Expert in Computer Programming Languages and Web Development and Designing Technologies.

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Article Tags: C++ Tutorial, Typecasting In C++, Learn C++

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