Concerning string.cstr()

[Michael Lawson]

I may be a bit ignorant, or I haven't searched hard enough,
but how exactly is one to grab the finger character of a
string variable? The only way I know how to at the moment
looks a bit ugly, ie: string.cstr()[0]; Is there another
way I can do this? I figure if it *looks* ugly, then there
probably is a better way. And as a result, I've a tendency
to use C-style strings in C++ because I can't find a better
way of doing this, or scanning each individual letter of a
string in some occasions.

Thanks much,
Michael

 

[Gianni Mariani]

I may be a bit ignorant, or I haven't searched hard enough,
but how exactly is one to grab the finger character of a
string variable? The only way I know how to at the moment
looks a bit ugly, ie: string.cstr()[0]; Is there another
way I can do this? I figure if it *looks* ugly, then there
probably is a better way. And as a result, I've a tendency
to use C-style strings in C++ because I can't find a better
way of doing this, or scanning each individual letter of a
string in some occasions.

#include <iostream>

int main()
{

std::string str = "ABCD\n";

str[0] = 'X';

std::cout << str;
}

 

[Michael Lawson]

Michael Lawson wrote:

#include <iostream>

int main()
{

std::string str = "ABCD\n";

str[0] = 'X';

std::cout << str;
}

Yep. I'm ignorant. Thanks much.

...damn assumptions
-Michael

 

[Pierre]

I may be a bit ignorant, or I haven't searched hard enough,

but how exactly is one to grab the finger character of a
string variable? The only way I know how to at the moment
looks a bit ugly, ie: string.cstr()[0];

you can use the at(position) function

for(std::string::size_type i=0;i<s.size();++i)
{
cout << s.at(i);
}

or you can use the [] operator

for(std::string::size_type i=0;i<s.size();++i)
{
cout << s;
}

or you can use the std::string::iterator

for(std::string::iterator i=s.begin();i!=s.end();++i)
{
cout << (*i);
}

Is there another
way I can do this? I figure if it *looks* ugly, then there
probably is a better way.

you should have a look at a C++ documentation about the standard
template library (STL).

And as a result, I've a tendency
to use C-style strings in C++ because I can't find a better
way of doing this, or scanning each individual letter of a
string in some occasions.

I did the same when I was learning C++. The more you learn STL and
understand how it works, the less you will use some features of C
(stdio, callback, malloc/realloc... etc...)

Pierre