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Can anyone help me with a way of converting String to double in vc++?
I can’t use atoi, since it converts char to double. But I am using istringstream.
std::istringstream stm;
double d;
String name = "32.67";
stm.str(name);
stm >>d;
It will give a compilation error:
error C2664: 'void std::basic_istringstream::str(const std::basic_string &)' : cannot convert parameter 1 from 'System::String ^' to 'const std::basic_string &'
Please help with different solution or correct this.
std::stringstream str() accepts a std::string as an argument. You’re passing it a System::String, wherever that comes from. Given the funky ^ symbol you must be using C++/CLI, using .NET strings.
Use std::string unless you are for some reason required to use the .NET library, in which case you need to either use .NET conversion functions, or convert to a std::string (or char* c-string and use the << operator).