"Type Casting" is method using which a variable of one datatype is converted to another datatype, to do it simple the datatype is specified using parenthesis in front of the value.

#include <iostream.h>
using namespace std;
int main()
  {
     short x=40;
     int y;
     y = (int)x;    
     cout << "Value of y is:: "<< y <<"\nSize is::"<< sizeof(y);
     return 0;
  }  

   Value of y is:: 40
   Size is::4

In the above example the short data type value of x is type cast to an integer data type, which occupies "4" bytes.

Type casting can also done using some typecast operators available in C++. following are the typecast operators used in C++.

• static_cast
• const_cast
• dynamic_cast
• reinterpret_cast
• typeid

#include <iostream.h>
using namespace std;
int main()
  {
     int a = 31;
     int b = 3;
     float x = a/b;
     float y = static_cast<float>(a)/b;
     cout << "Output without static_cast = " << x << endl;
     cout << "Output with static_cast = " << y << endl;
     cout << "Type id of x = " << typeid(x).name() << '\n';
  }

   Output without static_cast = 10
   Output with static_cast = 10.3333
   Type id of x = float

In the above example we have assigned the integer variable "a" to be float using the static_cast operator. So the result is "10.3333".