^P (for example) is not the character ^ followed by the character P. It's the single character Ctrl-P (chr 16). The OP just posted the output of a program that represent chr 16 as ^P. When the strings were stored, they were prefixed by their length. 16 is the length of bishop@yahho.com.

The length might not always be a byte. In some libraries (such as C++ STL, I think), the size of the field varies to accomodate strings longer than 255 characters.

Also, email addresses are not as simple as you assume. They may contain multiple "@", for starters.

In reply to Re^2: Cout & parsing by ikegami
in thread Cout & parsing by Bugorr

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