29 lines
568 B
C
29 lines
568 B
C
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#include <stdio.h>
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#include <stdarg.h>
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FILE *LogFile;
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/* a general error routine */
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void errmsg( char *format, ... )
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{
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va_list arglist;
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fprintf( stderr, "Error: " );
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va_start( arglist, format );
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vfprintf( stderr, format, arglist );
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va_end( arglist );
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if( LogFile != NULL ) {
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fprintf( LogFile, "Error: " );
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va_start( arglist, format );
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vfprintf( LogFile, format, arglist );
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va_end( arglist );
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}
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}
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void main()
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{
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LogFile = fopen( "error.log", "w" );
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errmsg( "%s %d %s", "Failed", 100, "times" );
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}
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