The harbor seal is a popular animal at the aquarium.

His appearance from behind looked very sad.

His sleeping appearance looks very peaceful.

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

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

I wrote a program using a bool type variable.

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

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

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

Hand washing and wearing masks are important for the prevention of severe acute respiratory syndrome.