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Annotation of coherent/a/usr/man/ALL/fgets, revision 1.1.1.1

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                      2: 
                      3: fgets()                   STDIO Function                  fgets()
                      4: 
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                      7: 
                      8: Read line from stream
                      9: 
                     10: #include <stdio.h>
                     11: cchhaarr *ffggeettss(_s, _n, _f_p) cchhaarr *_s; iinntt _n; FFIILLEE *_f_p;
                     12: 
                     13: fgets reads  characters from  the stream  fp into string  s until
                     14: either _n-1 characters have been read,  or a newline or EOF is en-
                     15: countered.  It  retains the newline,  if any, and  appends a null
                     16: character at  the end of of the string.   fgets returns the argu-
                     17: ment _s if any characters were read, and NULL if none were read.
                     18: 
                     19: ***** Example *****
                     20: 
                     21: This example  looks for the pattern given  by argv[1] in standard
                     22: input or in file argv[2].  It demonstrates the functions pnmatch,
                     23: fgets, and freopen.
                     24: 
                     25: 
                     26: #include <stdio.h>
                     27: #define MAXLINE 128
                     28: char buf[MAXLINE];
                     29: 
                     30: 
                     31: 
                     32: void fatal(s) char *s;
                     33: {
                     34:         fprintf(stderr, "pnmatch: %s\n", s);
                     35:         exit(1);
                     36: }
                     37: 
                     38: 
                     39: 
                     40: main(argc, argv)
                     41: int argc; char *argv[];
                     42: {
                     43:         if (argc != 2 && argc != 3)
                     44:                 fatal("Usage: pnmatch pattern [ file ]");
                     45: 
                     46: 
                     47: 
                     48:         if (argc==3 && freopen(argv[2], "r", stdin)==NULL)
                     49:                 fatal("cannot open input file");
                     50: 
                     51: 
                     52: 
                     53:         while (fgets(buf, MAXLINE, stdin) != NULL) {
                     54:                 if (pnmatch(buf, argv[1], 1))
                     55:                         printf("%s", buf);
                     56:         }
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                     63: 
                     64: COHERENT Lexicon                                           Page 1
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                     68: 
                     69: fgets()                   STDIO Function                  fgets()
                     70: 
                     71: 
                     72: 
                     73:         if (!feof(stdin))
                     74:                 fatal("read error");
                     75:         exit(0);
                     76: }
                     77: 
                     78: 
                     79: ***** See Also *****
                     80: 
                     81: fgetc(), gets(), STDIO
                     82: 
                     83: ***** Diagnostics *****
                     84: 
                     85: fgets returns NULL  if an error occurs, or if  EOF is seen before
                     86: any characters are read.
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                    130: COHERENT Lexicon                                           Page 2
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