This electrical appliance is made of copper wire.

This copper pot is an ancient craft.

This copper statue is very heavy.

He is clearly a night owl, working late into the night and sleeping late into the morning.

I wrote a program using a bool type variable.

A boolean variable can hold a value of true or false.

To declare an integer type variable, use 'int'.

In this program, we are using a variable of int type.

The character data type is a very important data type in programming.

Using a char type variable, we process information one character at a time.