tests2/40_stdio.c

   1 #include <stdio.h>
   2
   3 int main()
   4 {
   5    FILE *f = fopen("fred.txt", "w");
   6    fwrite("hello\nhello\n", 1, 12, f);
   7    fclose(f);
   8
   9    char freddy[7];
  10    f = fopen("fred.txt", "r");
  11    if (fread(freddy, 1, 6, f) != 6)
  12       printf("couldn't read fred.txt\n");
  13
  14    freddy[6] = '\0';
  15    fclose(f);
  16
  17    printf("%s", freddy);
  18
  19    int InChar;
  20    char ShowChar;
  21    f = fopen("fred.txt", "r");
  22    while ( (InChar = fgetc(f)) != EOF)
  23    {
  24       ShowChar = InChar;
  25       if (ShowChar < ' ')
  26          ShowChar = '.';
  27
  28       printf("ch: %d '%c'\n", InChar, ShowChar);
  29    }
  30    fclose(f);
  31
  32    f = fopen("fred.txt", "r");
  33    while ( (InChar = getc(f)) != EOF)
  34    {
  35       ShowChar = InChar;
  36       if (ShowChar < ' ')
  37          ShowChar = '.';
  38
  39       printf("ch: %d '%c'\n", InChar, ShowChar);
  40    }
  41    fclose(f);
  42
  43    f = fopen("fred.txt", "r");
  44    while (fgets(freddy, sizeof(freddy), f) != NULL)
  45       printf("x: %s", freddy);
  46
  47    fclose(f);
  48
  49    return 0;
  50 }
  51
  52 /* vim: set expandtab ts=4 sw=3 sts=3 tw=80 :*/