std::strings's capacity(), reserve() & resize() functions

Question

I wan to use std::string simply to create a dynamic buffer and than iterate through it using an index. Is resize() the only function to actually allocate the buffer?

Answer 1

std::vector instead of std::string might also be a solution - if there are no requirements against it.

vector v; // empty vector
vector v(10); // vector with space for 10 elements, here char's

Your example:

vector my_string(20);

int i=0;

for ( parsing_something_else_loop )
{
    char ch = ;
    my_string[i++] = ch;
}