The use of C + + macros #val under Unicode

The following is a detailed analysis of the use of the macro #val in C + + under Unicode, the need for friends can refer to the following

#define CHECK (condition) cout<<check failed:<< #condition <<endl;

The above macro, when you CHECK (MyFunc ()); , suppose MyFunc returns false and outputs: Check Failed:myfunc ()

In a macro, #condition converts a parameter to a string, which makes it easy to print out the function name when the log is printed, and so on

This may all know, too small pediatrics, but, when you use Unicode under the time, it is likely to appear garbled

The solution is to replace the #condition with l## #conditon

Copy Code code as follows:

#define CHECK (condition) cout<<check failed:<<l## #condition <<endl;