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/* n_23.c: ## operator in macro definition. */
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#define glue( a, b) a ## b
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#define xglue( a, b) glue( a, b)
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fputs( "started\n", stderr);
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assert( glue( x, y) == 1);
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/* 23.2: Generate a preprocessing number. */
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assert( xglue( .12e+, EXP) == 12.0);
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fputs( "success\n", stderr);