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Annotation of coherent/a/usr/man/ALL/gets, revision 1.1

1.1     ! root        1: 
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        !             3: gets()                    STDIO Function                   gets()
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        !             8: Read string from standard input
        !             9: 
        !            10: #include <stdio.h>
        !            11: cchhaarr *ggeettss(_b_u_f_f_e_r) cchhaarr *_b_u_f_f_e_r;
        !            12: 
        !            13: gets  reads characters  from  the standard  input  into a  buffer
        !            14: pointed at by  _b_u_f_f_e_r.  It stops reading as soon  as it detects a
        !            15: newline character or EOF.   gets discards the newline or EOF, ap-
        !            16: pends a null character onto  the string it has built, and returns
        !            17: another copy of _b_u_f_f_e_r.
        !            18: 
        !            19: ***** Example *****
        !            20: 
        !            21: The following example uses ggeettss to get a string from the console;
        !            22: the string is echoed twice to demonstrate what ggeettss returns.
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        !            24: 
        !            25: #include <stdio.h>
        !            26: 
        !            27: main()
        !            28: {
        !            29:         char buffer[80];
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        !            32: 
        !            33:         printf("Type something: ");
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        !            37:         /*
        !            38:          * because of the way COHERENT's teletype
        !            39:          * driver works, the following fflush has
        !            40:          * no effect.  It should be included for
        !            41:          * portability to other operating systems.
        !            42:          */
        !            43: 
        !            44: 
        !            45: 
        !            46:         fflush(stdout);
        !            47:         printf("%s\n%s\n", gets(buffer), buffer);
        !            48: }
        !            49: 
        !            50: 
        !            51: ***** See Also *****
        !            52: 
        !            53: buffer, fgets(), getc(), STDIO
        !            54: 
        !            55: ***** Diagnostics *****
        !            56: 
        !            57: gets returns NULL if an error occurs or if EOF is seen before any
        !            58: characters are read.
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        !            63: 
        !            64: COHERENT Lexicon                                           Page 1
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        !            68: 
        !            69: gets()                    STDIO Function                   gets()
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        !            72: 
        !            73: ***** Notes *****
        !            74: 
        !            75: gets  stops reading  the input  string  as soon  as it  detects a
        !            76: newline character.   If a previous  input routine left  a newline
        !            77: character in the standard input buffer, gets will read it and im-
        !            78: mediately stop accepting  characters; to the user, it will appear
        !            79: as if gets is not working at all.
        !            80: 
        !            81: For example, if getchar  is followed by gets, the first character
        !            82: ggeettss  will  receive  is  the  newline  character left  behind  by
        !            83: ggeettcchhaarr.  A simple statement will remedy this:
        !            84: 
        !            85: 
        !            86:         while (getchar() != '\n')
        !            87:                 ;
        !            88: 
        !            89: 
        !            90: This throws  away the newline  character left behind  by getchar;
        !            91: gets will now work correctly.
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        !           130: COHERENT Lexicon                                           Page 2
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