What is the correct expression to determine whether the char variable ch is an uppercase letter?

The correct expression to determine whether the char variable ch is an uppercase letter is "(ch>=' A' )&&(ch<='Z')". Character data is encoded in ASCII code internally in the computer. Stored, English uppercase letters and lowercase letters are consecutive in the ASCII code table.

The correct expression to determine whether the char variable ch is an uppercase letter is "(ch>=' A' )&&(ch<=' Z')".

Character data is stored in ASCII code inside the computer. English uppercase letters and lowercase letters are continuous in the ASCII code table. Capital letters A to Z are from 65 to 90, so as long as the variable ch is greater than A and less than Z, it is guaranteed to be an uppercase letter.

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