Learn: What are the widening and narrowing conversions in C++? In this article we are going to differentiate both kinds of conversions with Examples.

Widening conversion

A "widening" conversion or typecast is a cast from one data type to another data type, where the "destination" data type has a larger range compare to the "source" data type.

For example:

int to long
float to double

Consider the program:

#include <iostream>
using namespace std;

int main()
{
	float F = 0.0F	;
	int   A = 10	;
	
	F = A;
	
	cout<<"Value of F: "<<F<<endl;
	
	return 0;
}

Output

Value of F: 10

In this conversion, there is no possibility of data lose.

Narrowing conversion

A "narrowing" conversion or typecast is the exact opposite of widening conversion.

For example:

long to int
double to float

Consider the program:

#include <iostream>
using namespace std;

int main()
{
	float F = 12.53F	;
	int   A = 0;
	
	A = F;
	
	cout<<"Value of A: "<<A<<endl;
	
	return 0;
}

Output

Value of A: 12

In this conversion, there is possibility of data lose.

C++ Tutorial

How To Remove Duplicate From Array Without Using Any Collection Or Function

<Bits/Stdc++.H> As Header File In C++

C++ Tokens

A Short Introduction To Object Oriented Programming

Concepts Of Object Oriented Programming System (Oops)

Top-Down And Bottom-Up Approach In C/C++ Programming

C++ Single & Multiline Comments

Basic Input & Output Using Cin And Cout

What Is The Difference Between Cout And Std::Cout In C++?

Console Input Output Operations, Methods In C++

C++ Manipulators - Endl, Setw, Setprecision, Setf

Read/Write Integer Value Using Decimal, Octal And Hexadecimal Base Formats In C++

How To Read A String With Spaces In C++?

What Is Bool And Boolean Literals In C++?

Printing Float Values With Fixed Number Of Decimal Places Through Cout In C++

Difference Between Const And #Define In C, C++ Programming Language

Difference Between Cout And Puts() In C++ Programming Language

Memory Leaks/Holes In C++ Programming Language

Exception Handling In C++ With Example

Differentiate Widening And Narrowing Conversions With Examples In C++

Passing Dynamically Allocated Two Dimensional Array To A Function [With C++ Program]

Methods To Concatenate Strings In C++

Warning And Error Messages In C++

(Enumeration) Enum With Example In C++

What Is Size Of Structure With No Members In C++ Programming Language

A Simple Example Of Pointer In C++

Exit() Vs _Exit() In C++ With Examples

Exit(0) Vs Exit(1) In C++ With Examples

Bool Data Type In C++

C++ Operators

Assignment Operators In C/C++

Arithmetic Operators In C/C++

Relational Operators In C/C++

Logical Operators In C/C++

Pre-Increment And Post-Increment Operators In C/C++

Sizeof() Operator In C/C++

Difference Between New And Malloc() In C++

Difference Between Delete And Free() In C++

Sizeof() Operator Operands In C++ Programming

C++ Alternative Operator Representations

C++ 'And' Keyword With Example

C++ 'Or' Keyword With Example

C++ 'Not' Keyword With Example

C++ 'Not_Eq' Keyword With Example

C++ 'Bitand' Keyword With Example

C++ 'Bitor' Keyword With Example

C++ 'Xor' Keyword With Example

C++ 'Compl' Keyword With Example

C++ 'And_Eq' Keyword With Example

C++ 'Or_Eq' Keyword With Example

C++ 'Xor_Eq' Keyword With Example

If Else Statement In Cpp With Example

Ladder If-Else Statement In C++ With Example

Nested If-Else Statement In C++ With Example

Ternary Operator In C++ (Check Whether A Year If Leap Or Not)

SelfCode

Related Articles

Differentiate Widening And Narrowing Conversions With Examples In C++