Typecasting: C++ is very strict about type compatibility. Different variable types must be cast when their values are assigned to each other. Type cast operator is used for explicit type conversion of variables. A type name behaves as if it is a function for converting values to a designated type.

E.g. average = sum/float(i);
The variable ‘i’ is converted to float and used to calculate the average.

C++ - What is Typecasting? - Feb 23, 2009 at 23:05 pm

Explain typecasting.

Answer - Typecasting enables data type conversion. C++ supports Implicit conversions and Explicit conversion. Implicit conversions automatically performed when a value is copied to a compatible type. If there is an operation between an int and a float, the int is promoted to float before performing operation.

You can cast types explicitly as follows.
int i, j, k;
k = i * long(j);

Also read

What is the difference between dynamic and static casting?

1) for implicit casts that the compiler would make automatically anyway (bool to int)
2) as a mandatory forced cast (float to int)....................

What is Typecasting? Explain with examples.

Typecasting: C++ is very strict about type compatibility. Different variable types must be cast when their values are assigned to each other. Type cast operator is used for explicit type conversion of variables.......................