代码# include unistd.h # include stdlib.h # include stdio.h # include string.hint four _ char _ to _ int (u u u u unsigned chara chara ret_val=8； ret_val |=c； ret_val=8； ret_val |=b； ret_val=8； ret_val |=a； return ret_val； (intmain ) intargc，char *argvyjdsg ) printf('%un '，four _ char _ to _ int (0x 00，0x C2，01，0x 00 ) ) }测试结果