C++ - What does this function do:

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What does this function do:

What does this function do:

string f(const string &x) {
return x.empty()? x : f(x.substr(1)) + x[0];
}

What does this piece of code perform:

char *a=...., *b=....;
while(*b++ = *a++);

Total Answers and Comments: 5

Last Update: April 25, 2009 Asked by: Namataraginu

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Best Rated Answer

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Submitted by: bapu_60

I think the first one is reversing the string and the second one is copying one string to other

Above answer was rated as good by the following members:
YaelG, Bhimasena

February 20, 2008 06:23:48

bapu_60

Member Since: February 2008 Contribution: 3

RE: What does this function do:

I think the first one is reversing the string and the second one is copying one string to other

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Overall Rating: +1

March 22, 2008 20:34:26

rsuzoka

Member Since: March 2008 Contribution: 1

RE: What does this function do:

Yeah the first one reverses the string. I'm not too sure about the second one - it looks more like comparing two strings rather than copying one to another.

Any other comments????

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March 24, 2008 04:14:58

bapu_60

Member Since: February 2008 Contribution: 3

RE: What does this function do:

No if you see it is a single " " that is copying and it terminates when *a *b ' '

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February 17, 2009 05:59:01

santhosh.kanchanapally

Member Since: April 2008 Contribution: 10

RE: What does this function do:

char *a "hai" *b "san";
while(*b++ *a++);

This program leads to crash as we are assigning one memory location to other memory location.

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April 25, 2009 14:04:37

shantanu_hbd

Member Since: April 2009 Contribution: 3

RE: What does this function do:

Second function is copying 'a' to 'b' provided that 'a' should be a null terminated string.

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