i do not know if this it a TRUE statement

[elvis0288]

Consider the following declarations:

int score = 80;
char answer = ‘N’;
int n = 8;
char ch = ‘a’;

( (ch >= ‘A’) && (ch <= ‘Z’) )

[hamsterman]

no. 'a' is not between 'A' and 'Z'. 'a' is between 'a' and 'z'. There is a difference. See ASCII table. If ch is entered by user and you want to check if it is between 'a'/'A' and 'z'/'Z' you could use tolower().

[Athar]

Technically the C++ standard does not prohibit an implementation where this is true, however you won't find one in practice.
However, I think the real question was whether the comparison is case-insensitive, which hamsterman already addressed.

[moorecm]

The syntax is also incorrect. Single quotes are like this: '

[elvis0288]

so this is a FALSE statement because a is not between A and Z?

[filipe]

char ch = 'a';
ch >= 'A' && ch <= 'Z';

The expression evaluates to false (not FALSE) because 'a' is not between 'A' and 'Z'. There are no statements in that expression, though.

[elvis0288]

thank you

[Kyon]

Remember to use 's, has moorecm already told.

[moorecm]

Here's an ASCII table:
http://www.asciitable.com/

The red Chr column has the characters and the Dec column has their corresponing decimal values.

A = 65
...
Z = 90

a = 97
...
z = 122