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There is a HUGE difference between "string" and 'c' 'h' 'a' 'r'.
"string"
'c' 'h' 'a' 'r'
You are comparing address of string "T" with the numerical value of character 'T'.
"T"
'T'
The expression: if (value == 'T') will be much better.
if (value == 'T')
