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       0152-cat.c - scc - simple c99 compiler
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       ---
       0152-cat.c (269B)
       ---
            1 #define CAT(x,y) x ## y
            2 #define XCAT(x,y) CAT(x,y)
            3 #define FOO foo
            4 #define BAR bar
            5 
            6 int foobar;
            7 
            8 int
            9 main(void)
           10 {
           11         int foo = 1, bar = 0;
           12 
           13         CAT(foo,bar) += foo + bar;
           14         if (foobar != 1)
           15                 return 1;
           16         XCAT(FOO,BAR) += foo + bar;
           17         if (foobar != 2)
           18                 return 2;
           19 
           20         return 0;
           21 }