35 lines
692 B
C
35 lines
692 B
C
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#include <stdio.h>
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#include <string.h>
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#include <malloc.h>
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#include <fcntl.h>
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#include <io.h>
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long char_count( FILE *fp )
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{
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char *buffer;
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size_t bufsiz;
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long count;
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/* allocate half of stack for temp buffer */
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bufsiz = stackavail() >> 1;
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buffer = (char *) alloca( bufsiz );
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setvbuf( fp, buffer, _IOFBF, bufsiz );
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count = 0L;
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while( fgetc( fp ) != EOF ) ++count;
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fclose( fp );
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return( count );
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}
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void main()
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{
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FILE *fp;
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fp = fopen( "file", "rb" );
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if( fp != NULL ) {
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setmode( fileno( fp ), O_BINARY );
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printf( "File contains %lu characters\n",
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char_count( fp ) );
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fclose( fp );
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}
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}
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