Kevin Dong questions

• Set background color in postscript
• How to generate 24-bit RGB values "more gracefully"?
• Is sum+++i undefined behavior in C? [duplicate]
• How can I share a const char array between two source files gracefully?
• Is "Fn key" not defined in X Window in "X11/keysymdef.h"?
• What does screen number and display number mean in Xlib?
• How does C preprocessor actually work?
• The sub-specifier in printf
• 'GetConsoleWindow' was not declared in this scope?
• Why is traversing more time-consuming than merging on two sorted std::list?

Kevin Dong answers