ZSH在C程序结果后自动打印'％'-ZSHprint'%'automaticallyaftertheresultoftheCprogram

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zsh prints a % (by default for a normal user) when the last line does not end with a newline character. This partial line could be erased by the prompt otherwise. Add a newline to properly terminate the last line (\n):

当最后一行不以换行符结束时，zsh会输出％（默认情况下为普通用户）。否则可以通过提示擦除该部分线。添加换行符以正确终止最后一行（\ n）：

printf("1\n");

http://zsh.sourceforge.net/Doc/Release/Options.html#index-PROMPT_005fSP

http://zsh.sourceforge.net/Doc/Release/Options.html#index-PROMPT_005fSP