Why is this regex match failing

Question

I am using the following code and the regex match is failing

std::regex reg("^Program Files");
if(std::regex_match("Program Files (x86)",reg)
{
  return true;
}

I tried this regex here and it seems to work. Any suggestions why my if condition is not returning true ?

Answer 1

You want regex_search(), not regex_match(). The regex_match() function always matches against the complete string.