two probably not beginner questions

question #1: what are the main uses for the libraries <new>, <complex>, and <map>.

question #2: i am told to make a program that makes a random 50 char passcode. i have a program that prints out 50 random letters/symbols/#s and i want to make the program copy those random letters/symbols/#s to a string as a passcode. is that possible thanx in advance
#1:
<new>: http://www.cplusplus.com/reference/std/new/
<complex>: Working with complex numbers.
<map>: Mapping values to other values. There is an infinite number of uses for that.
Counting occurrences of objects, or accessing objects by a name or ID, for example.

#2:
Yes, append them to a string instead of printing them.
See http://www.cplusplus.com/reference/string/string/ for further reference.
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ok thanx. its over my head though. ill just learn some of that stuff later lol thanx anyway
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