Type Conversion in C++

 Type conversion can be done in 2 ways in C ++ 

1.  Implicit type conversion  

2.  Explicit type conversion

1. Implicit type conversion

• The implicit type conversion is the type of conversion done automatically by the compiler without any human effort.
•  It means, implicit conversion automatically converts one data type into another data type based on some pre-defined rules.
• It is also known as automatic type conversion.
• order of typecast in implicit conversion :

Boolàcharàshort intàintàunsigned intàlong intàunsigned long intàlong long intàfloatàdouble àlong double.

• Means in implicit conversion small data type value is converted in form  big data type automatically by the compiler.

Example program:

#include<iostream>

using namespace std;

int main(){

    int a = 'A'; // char to int

    cout<<a; // 65

   

    return 0;

}

 2. Explicit type conversion 

Conversion that requires user interaction to change the data type  is called explicit type conversion in other words explicit type conversion allows programmer to manually change or type casting data type of the data into another data type.

(Basically here we convert the big data type into small data type)

Syntax :

(type)expression

Flow of data type in explicit type conversion:

long double ➡️ double ➡️ float ➡️ long long int ➡️ unsigned long int ➡️ long int ➡️ unsigned int ➡️ int ➡️ short int ➡️ char ➡️ char ➡️ bool

Example program :

#include<iostream>

using namespace std;

int main(){

    char s = (char)65; // int to char

    cout<<s; // A

   

    return 0;

}