ex_1-17.c

   1 /*
   2
   3 function: readbuffer
   4         read chars from input until newline is found or buffer is full
   5         return if buffer overflowed while filling
   6
   7
   8 function printline
   9         print buffer passed in
  10         keep printing input until newline is found
  11
  12
  13 main
  14
  15         buffer
  16         status
  17         while status not changed
  18                 readbuffer
  19
  20         if status changes
  21                 print buffer
  22                 print rest of line until newline
  23 */
  24
  25 #include <stdio.h>
  26
  27 #define MAX 81
  28
  29 int readbuffer(char *buffer)
  30 {
  31         int i = 0;
  32         char c;
  33
  34         while(i < MAX)
  35         {
  36                 c = getchar();
  37                 if (c == EOF) { return -1; }
  38                 if(c == '\n') { return 0; }
  39                 buffer[i++] = c;
  40         }
  41         return 1;
  42 }
  43
  44 int printline(char *buffer)
  45 {
  46         int endfound = 1;
  47         char c, i;
  48         for(i = 0; i < MAX; ++i)
  49                 putchar(buffer[i]);
  50
  51         while(endfound == 1)
  52         {
  53                 c = getchar();
  54                 if (c == EOF) { endfound = -1; }
  55                 else if (c == '\n' ) { endfound = 0; }
  56                 else { putchar(c); }
  57         }
  58         putchar('\n');
  59         return endfound;
  60 }
  61
  62 int main(void)
  63 {
  64         char buffer[MAX];
  65         int status = 0;
  66
  67         while (status != -1)
  68         {
  69                 status = readbuffer(buffer);
  70                 if(status == 1)
  71                         status = printline(buffer);
  72         }
  73         return 0;
  74 }