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10 years, 6 months ago.
Is there a "standard" mbed compatible C++ String class available?
Hi,
Maybe stupid question? If so please be gentle!
Thanks, krhohio
1 Answer
10 years, 6 months ago.
Have you tried doing the standard C++ thing? Here's an example:
(I have tried the example below on a Mini-DK2 board with the SPI TFT as stdout as I don't have a regular mbed with me right now, and it works, don't know what you might have to test the cout on, but it works...)
C++ strings example
#include "mbed.h"
#include <iostream>
#include <string>
string mystr;
int main()
{
mystr = "This is a test.";
cout << mystr << endl;
}
The mbed compiler doesn't seem to complain but on some systems you may also need a line:
using std::string;
after the #include and before you first use a string variable type.
A list of std::string functions can be found here: http://www.cplusplus.com/reference/string/string/ c_str() is a very handy one that's easy miss, it returns a char* to the string in legacy c format so that you can use the c++ string type in c functions that take expect a char pointer. e.g.
string myName = "Andy";
printf("Hello %s\n", myName.c_str());