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Why are these programs not working?

  1. Aug 22, 2009 #1
    I was wondering why are these programs, as given in an e-book not working --

    Code (Text):
     #include <stdio.h>

       /* count lines in input */
       main()
       {
           int c, nl;

           nl = 0;
           while ((c = getchar()) != EOF)
               if (c == '\n')
                   ++nl;
           printf("%d\n", nl);
       }
    Code (Text):

     #include <stdio.h>

       /* count digits, white space, others */
       main()
       {
           int c, i, nwhite, nother;
           int ndigit[10];

           nwhite = nother = 0;
           for (i = 0; i < 10; ++i)
               ndigit[i] = 0;

           while ((c = getchar()) != EOF)
               if (c >= '0' && c <= '9')
                   ++ndigit[c-'0'];
               else if (c == ' ' || c == '\n' || c == '\t')
                   ++nwhite;
               else
                   ++nother;

           printf("digits =");
           for (i = 0; i < 10; ++i)
               printf(" %d", ndigit[i]);
           printf(", white space = %d, other = %d\n",
               nwhite, nother);
       }
     
    The programs are getting compiled, but on running the binary, I just get an empty line on which I can type...

    Expected is that after entering a new line, the program should proceed, but nothing like that is happening...after entering a new line...I just enter a new line and can type in that too. :confused:

    This forms a never ending loop.

    I'm using gcc to compile the program.
     
  2. jcsd
  3. Aug 22, 2009 #2
    Enter the end-of-stream character to terminate the input. Probably ctrl-D.
     
  4. Aug 22, 2009 #3
    Thanks.
     
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