Alessandro Bonazzi
e075990ed3
Files correlati : Commento : Aggiunto il preprocessore c++ mcpp per sostituire il compilatore nella compilazione delle maschere.
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* n_13_8.c: Grouping of sub-expressions in #if expression. */
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#include "defs.h"
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main( void)
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{
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fputs( "started\n", stderr);
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/* 13.8: Unary operators are grouped from right to left. */
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#if (- -1 != 1) || (!!9 != 1) || (-!+!9 != -1) || (~~1 != 1)
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fputs( "Bad grouping of -, +, !, ~ in #if expression.\n", stderr);
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exit( 1);
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#endif
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/* 13.9: ?: operators are grouped from right to left. */
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#if (1 ? 2 ? 3 ? 3 : 2 : 1 : 0) != 3
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fputs( "Bad grouping of ? : in #if expression.\n", stderr);
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exit( 1);
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#endif
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/* 13.10: Other operators are grouped from left to right. */
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#if (15 >> 2 >> 1 != 1) || (3 << 2 << 1 != 24)
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fputs( "Bad grouping of >>, << in #if expression.\n", stderr);
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exit( 1);
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#endif
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/* 13.11: Test of precedence. */
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#if 3*10/2 >> !0*2 >> !+!-9 != 1
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fputs( "Bad grouping of -, +, !, *, /, >> in #if expression.\n", stderr);
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exit( 1);
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#endif
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/* 13.12: Overall test. Grouped as:
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((((((+1 - -1 - ~~1 - -!0) & 6) | ((8 % 9) ^ (-2 * -2))) >> 1) == 7)
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? 7 : 0) != 7
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evaluated to FALSE.
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*/
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#if (((+1- -1-~~1- -!0&6|8%9^-2*-2)>>1)==7?7:0)!=7
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fputs( "Bad arithmetic of #if expression.\n", stderr);
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exit( 1);
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#endif
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fputs( "success\n", stderr);
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return 0;
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}
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