Assume that x is a char variable has been declared and already given a value. Write an expression whose value is true if and only if x is NOT a letter.

Assume that x is a char variable has been declared and already given a value. Write an expression whose value is true if and only if x is NOT a letter.

LANGUAGE: Java

CHALLENGE:

Assume that x is a char variable has been declared and already given a value. Write an expression whose value is true if and only if x is NOT a letter.

SOLUTION:

!((x >= 'A' && x <='Z') || (x >= 'a' && x <='z'))

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