打印脚趾 一次调用printf的tic-tac-toe的C实现。为IOCCC 2020撰写 # include # define N ( a ) " % " #a " $hhn " # define O ( a,b ) " $ " #a " d " N(b) # define U " $.*37$d " # define G ( a ) " % " #a " $s " # define H ( a,b ) G(a)G(b) # defi