Swapping Characters

[alphawolf7]

Hi all,

I know you can swap strings using the .swap() function, but is it possible to swap characters? Any advice would be greatly appreciated.

[codekiddy]

it is possible to write own CharSwap() function which will swap chars :)

[alphawolf7]

So there is no "automatic"(for lack of a better word) way like the string .swap() function?

[codekiddy]

Yes it is :D

#include <iostream>

using namespace std;

int main()
{
	char a = 'a';
	char b = 'b';
	swap<char>(a, b);
	cout << a << endl << b << endl;
	cin.ignore();  // stop cmd here 
	return 0;
}

[LB]

You need to #include <algorithm> : http://www.cplusplus.com/reference/algorithm/
Also you do not have to specify <char>, the compiler can deduce that for you :)

[codekiddy]

You need to #include <algorithm>

you don't have to #include <algorithm> if you're using visual studio :D

Also you do not have to specify <char>

specifying <char> makes programers intention more understandable :)

[Peter87]

you don't have to #include <algorithm> if you're using visual studio :D

It's just happen to work because one of the headers you include already includes <algorithm>.

specifying <char> makes programers intention more understandable :)

I don't see how specifying <char> makes it more understandable. a and b are chars so of course we want to swap chars.

[Gaminic]

Sounds to me like he wanted to swap characters of a string, i.e.:

string s = "This is a string!";
swap(s[2],s[8]);
cout << s;

Output: Thas is i string!