计算机操作系统实验指导书

《操作系统管理》实验指导书

void DirF(); /*Dir FileSystem*/ void CdF(); /*Change Dir*/ void CreateF(); /*Create File*/ void DeleteF(); /*Delete File*/ void ModifyFM(); /*Modify FileMode*/ void OpenF(); /*Open File*/ void CloseF(); /*Close File*/ void ReadF(); /*Read File*/ void WriteF(); /*Write File*/ void QuitF(); /*Quit FileSystem*/ void help();

if((fp_mfd=fopen(\ {fp_mfd=fopen(\

for(i=0;i

if(loginsuc==1) /*Login Successfully*/ {while (1) {wgetchar=0; if (choiceend==1)

{printf(\

else printf(\ gets(choice);

strcpy(choice,ltrim(rtrim(strlwr(choice)))); if (strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else if(strcmp(choice,\ else choice1=12;

switch(choice1) fclose(fp_mfd); }

46

《操作系统管理》实验指导书

{case 1:DirF();choiceend=1;break;

case 2:CreateF();choiceend=1;if(!wgetchar) getchar();break; case 3:DeleteF();choiceend=1;if(!wgetchar)getchar();break; case 4:ModifyFM();choiceend=1;if(!wgetchar) getchar();break; case 5:choiceend=1;OpenF();if (!wgetchar) getchar();break; case 6:choiceend=1;CloseF();if (!wgetchar) getchar();break; case 7:choiceend=1;ReadF();if (!wgetchar) getchar();break; case 8:choiceend=1;WriteF();if (!wgetchar) getchar();break; case 9:printf(\

QuitF();exit(0);break; case 10:choiceend=1;clrscr();break; case 11:CdF();choiceend=1;break; case 20:help();choiceend=1;break; default:choiceend=0; } }

}

else printf(\}

void help(void) {

printf(\

printf(\}

char *rtrim(char *str) /*remove the trailing blanks.*/ {int n=strlen(str)-1; while(n>=0) {if(*(str+n)!=' ') {*(str+n+1)='\\0';

break; }

else n--; }

if (n<0) str[0]='\\0'; return str; }

char *ltrim(char *str) /*remove the heading blanks.*/ {char *rtrim(char *str); strrev(str); rtrim(str); strrev(str); return str;

47