B7C語言程序設(shè)計(jì)

1、 C Chapter 24. C C Chapter 24-1. C . . .fopen FILE fopen FILE FILE !fopen fopen FILE . FILE . FILE .fopen . wt . fp data.txt . rt . fp data.txt . . A fp ! data.txt . ! FILE * fp = fopen(C:Projectdata.txt, wt);fopen . . fclose fclost . . fclose Ch21 fflush fflush . fflush . fflush . . fflush fclose .

2、 ? ? . fp ch ! !Chapter 24-2. C . . ! ! 1 ? ? 2 ? ? (Basic) 1: Read or WriteQ + , .Q a . R/W . 2: , (t) : (b) : . : - Windows - : , , , : - . - : , ! rwar+w+a+btRead or Write Binary or Textrbwta+t t b 1text.txt n ?C n . C n . 2text.txt n n . . n ? Windows rn Linuxn Macr 3 . . Chapter 24-3. C Chapter

3、 21 stream stdin stdout , FILE . int fputc(int c, FILE * stream);/ int fgetc(FILE * stream);/ int fputs(const char * s, FILE * stream);/ char * fgets(char * s, int n, FILE * stream);/ A B fp fp . n . n . n readn readwrite read !feof . EOF . EOF . EOF .feof EOF ! EOF .feof EOF ! ! : freadint main(voi

4、d) int buf12; . . . . fread(void*)buf, sizeof(int), 12, fp); . . . . sizeof(int) 12 fp buf ! : fwriteint main(void) int buf7=1, 2, 3, 4, 5, 6, 7; . . . . fwrite(void*)buf, sizeof(int), 7, fp); . . . . sizeof(int) 7 buf fp ! buf !feof !1.2.1.2.Chapter 24-4. C : fprintf, fscanffprintf printf . fp () .

5、sprintf printf . fp .fprintf & ?fscanf & ?fprintf & fscanf !Text/Binary . fread & fwrite . Chapter 24-5. C ? FILE . read : “ ?” write : “ ?” , Read/Write . fputs, fread, fwrite . : fseek fseek fseek 1 2 3 4 5 6 7 8 9 e(eof)1 2 3 4 5 6 7 8 9 e(eof)1 2 3 4 5 6 7 8 9 e(eof)1 2 3 4 5 6 7 8 9 e