How to use it. 1  Open Excel & VBA editor 2  (+) Insert the code below under Sheet1. 3  Go back to Excel and select your desired range to fill with random & non-repeating numbers.  Execute the macro (+)
See also What are the rules about using an underscore in a C++ identifier; a lot of the same rules apply to both C and C++, though the embedded double-underscore rule is in C++ only, as mentioned at the top of this answer. Names with double leading underscores are reserved for use by the implementation.
from the command line will turn the cursor into a thick underscore, reclaiming one third of the character cell. Values 7-15 are also accepted, but they give the same as 6. The cursor default is defined in console-struct.h as the underscore, so, by default, value 0 is same as value 2.