在做键盘矩阵练习时,一直没有出现结果,出现以下3个报警:
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?MAIL?MIX_KEY_SCAN
*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL
SYMBOL: MAIN
MODULE: D:\KEIL\C51\LIB\C51S.LIB (?C_INIT)
*** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL
SYMBOL: MAIN
MODULE: D:\KEIL\C51\LIB\C51S.LIB (?C_INIT)
ADDRESS: 0010H
Program Size: data=10.0 xdata=0 code=283
creating hex file from "key_scan"...
"key_scan" - 0 Error(s), 3 Warning(s).
报警信息没有在意,
感觉程序那出问题,但是找半天没有找到。
找了半天终于找到了,看书看有点晕,打字的手抖了,main()竟然拼成mail(),竟然发生这样低级错误,O(∩_∩)O~,第一次打错;
心得:编译时,警告信息也不要错过,在时间允许的情况下,把警告信息够搞掉!!!