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Strange appearance of the line "Putty"

I run a C program using putty (don’t ask why), and it works fine, unless I run a specific function, the string “PuTTy” appears at the end. This doesn't seem to affect me much, but I'm just wondering if anyone knows why this is happening and what error this might indicate.

Note. When I run the code on a Linux terminal, there are no errors.

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This is a PuTTY issue caused by your program emitting a Control-E character. From the PuTTY FAQ :

A.7.12 When I cat the binary, I get 'PuTTYPuTTYPuTTY at my command line.

Do not do it then.

; PuTTY Control-E , , "PuTTY", . Control-E , . , , Control-E . . .

, (. 4.3.7); , , , .

, Control-E?

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