converting string into other types help

atoi and atof
dont know how to get a double

Here's a generic one I often use:

template<typename TYPE>TYPE& StrConvert(const std::string& pStr){	static TYPE t;	std::stringstream _ss;	_ss << pStr;	_ss >> t;	return t;}

Example:

std::string test("3.14");std::cout << StrConvert<float>(test);

You could also use the old favorite (and boost::lexical_cast is roughly the same)

template<typename R, typename T>R lexical_cast(T const& t) {  R ret;  std::stringstream st;  if(!(st<<t) || !(st>>ret))    throw std::bad_cast();  return ret;}

Same idea as the previous poster, except that it can more than convert from just strings :P

when i use the atof i get a warning about converting double to float, why does atof return a double and not a float?

plus is there any why to convert string to bool and any function that converts directly to float?

Quote:

Original post by 3dmodelerguy plus is there any why to convert string to bool and any function that converts directly to float?

Here's how you convert to bool:

bool boolFromString(string const &s){  //"true", "True", "TRUE", "T" or "t" treated as true, anything else as false  return s == "true" || s == "True" || s == "TRUE" || s == "T" || s == "t";}

Don't be afraid to do the obvious.