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贴代码，求点评，以完善编程的习惯和细节

时间：2010-08-18

来源：互联网

# #include <stdio.h>
# #include <string.h>
# //本程序的功能是将C语言源码文件中的注释删除掉，并把新得到的源码文件保存为filename_delnote.c
# //最后完成于2010年4月7日03:37，总耗时6小时，郁闷来着。
# //作者rool，oh yeah.
# void delnote(FILE *p,FILE *p_note)
# {
# int flag=0;
# char w_start,w_end;
# w_start=fgetc(p);
# w_end=w_start;
# while(w_end!=EOF)
# {
# w_end=fgetc(p);
# switch(flag) //flag的值，0表示字符是最普通的代码，1表示字符处于“”中，2表示字符是被//注释掉的，3表示字符是被/*--*/注释掉的
# {
# case 0:
# {
# switch(w_start)
# {
# case '/':
# {
# if(w_end=='*')
# {
# flag=3;
#
# }
# else if(w_end=='/')
# {
# flag=2;
# }
# else fputc(w_start,p_note);
# } break;
# case '\"':
# {
# flag=1;
# fputc(w_start,p_note);
# } break;
# default :fputc(w_start,p_note);
# }
# } break;
# case 1:
# {
# if(w_start=='\n'||w_start=='\"')
# {
# flag=0;
# }
# fputc(w_start,p_note);
# } break;
# case 2:
# {
# if(w_start=='\n')
# {
# flag=0;
# fputc(w_start,p_note);
# }
# } break;
# case 3:
# {
# if(w_start=='*'&&w_end=='/')
# {
# flag=0;
# w_end=fgetc(p);
# }
# } break;
# default :break;
# }
# w_start=w_end;
# }
# }
# int main(int argc,char *argv[])
# {
# if(argv[1]==NULL)
# {
# printf("---->You must give the filename follow the command!\n");
# printf("---->你没有指定需要操作的文件名\n");
# printf("---->Just like this style:\n\tdelnote filename.c\n");
# printf("---->You can try it again\n");
# return 1;
# }
# FILE *fp,*fp_delnote;
# fp=fopen(argv[1],"r");
# if(fp==NULL)
# {
# printf("Can't find the file %s or you do not have the permision to open this file\n",argv[1]);
# return 2;
# }
# printf("---->Be patient,the note of %s are being remove...\n",argv[1]);
# int n;
# n=strlen(argv[1]);
# char Fp_delnote[n+8];
# argv[1][n-2]='\0';//截取输入文件名，并且不要后缀名
# char *a="_delnote.c";
# strcpy(Fp_delnote,argv[1]);
# strcat(Fp_delnote,a);//得到去掉注释后的输处文件名，形如filename_name.c
# fp_delnote=fopen(Fp_delnote,"w");
# delnote(fp,fp_delnote);
# fclose(fp);
# fclose(fp_delnote);
# printf("---->Good,all of the work have done.\n");
# return 0;
# }

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