Question

I’m using sprintf(newpath, "%s%s", cCurrentPath, "\\init.scm"); to add \init.scm to current dir path but there is the usual warning:

warning C4996: 'sprintf': This function or variable may be unsafe.
Consider using sprintf_s instead. To disable deprecation, use
_CRT_SECURE_NO_WARNINGS.

Sprintf_s doesn’t support such “%s%s” string sum. How can I do it using sprintf_s?

Answer 1

sprintf_s is basically the same as sprintf, but it gets another parameter:

sprintf_s(newpath, sizeof(newpath), "%s%s", cCurrentPath, "\\init.scm");

Note – if newpath is a normal character array, sizeof(newpath) works. If it’s a pointer or an array passed as an argument, you may need a different way to get the size.
You can also use snprintf for the same purpose in a non-MS environment (though it works differently).