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

1.1     ! root        1: 
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        !             3: getc()                     STDIO Macro                     getc()
        !             4: 
        !             5: 
        !             6: 
        !             7: 
        !             8: Read character from file stream
        !             9: 
        !            10: #include <stdio.h>
        !            11: iinntt ggeettcc(_f_p) FFIILLEE *_f_p;
        !            12: 
        !            13: getc is a  macro that reads a character from  the file stream _f_p,
        !            14: and returns an int.
        !            15: 
        !            16: ***** Example *****
        !            17: 
        !            18: The following  example creates a  simple copy utility.   It opens
        !            19: the first file named on  the command line and copies its contents
        !            20: into the second file named on the command line.
        !            21: 
        !            22: 
        !            23: #include <stdio.h>
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        !            26: 
        !            27: void fatal(string)
        !            28: char *string;
        !            29: {
        !            30:         printf("%s\n", string);
        !            31:         exit (1);
        !            32: }
        !            33: 
        !            34: 
        !            35: 
        !            36: main(argc, argv)
        !            37: int argc; char *argv[];
        !            38: {
        !            39:         int foo;
        !            40:         FILE *source, *dest;
        !            41: 
        !            42: 
        !            43: 
        !            44:         if (--argc != 2)
        !            45:                 fatal("Usage: copy [source][destination]");
        !            46: 
        !            47: 
        !            48: 
        !            49:         if ((source = fopen(argv[1], "r")) == NULL)
        !            50:                 fatal("Cannot open source file");
        !            51:         if ((dest = fopen(argv[2], "w")) == NULL)
        !            52:                 fatal("Cannot open destination file");
        !            53: 
        !            54: 
        !            55: 
        !            56:         while ((foo = getc(source)) != EOF)
        !            57:                 putc(foo, dest);
        !            58: }
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        !            64: COHERENT Lexicon                                           Page 1
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        !            67: 
        !            68: 
        !            69: getc()                     STDIO Macro                     getc()
        !            70: 
        !            71: 
        !            72: 
        !            73: ***** See Also *****
        !            74: 
        !            75: fgetc(), getchar(), putc(), STDIO
        !            76: 
        !            77: ***** Diagnostics *****
        !            78: 
        !            79: getc returns EOF at end of file or on read fatal.
        !            80: 
        !            81: ***** Notes *****
        !            82: 
        !            83: Because  getc is  a macro, arguments  with side  effects probably
        !            84: will  not work  as  expected.  Also,  because getc  is a  complex
        !            85: macro, its use in expressions of too great a complexity may cause
        !            86: unforeseen  difficulties.  Use  of the  function fgetc  may avoid
        !            87: this.
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        !           130: COHERENT Lexicon                                           Page 2
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