汉字是由笔画组成的，笔画是构成汉字的最小结构单位。汉字笔画有横、竖、撇、捺、弯、折、钩等不同形态，其中竖弯钩“乚”的代表字有元，允，无，充，光等等，要想写好竖弯钩，需要把握四个步骤，一顿二弯三回四上钩
I\'m trying to write a Windows console application (in C++ compiled using g++) that will execute a series of instructions in a loop until finished OR until ctrl-z (or some other keystroke) is pressed.
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