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       strrchr.c - scc - simple c99 compiler
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       ---
       strrchr.c (191B)
       ---
            1 #include <string.h>
            2 
            3 #undef strrchr
            4 
            5 char *
            6 strrchr(const char *s, int c)
            7 {
            8         const char *t = s;
            9 
           10         while (*t)
           11                 ++t;
           12         while (t > s && *t != c)
           13                 --t;
           14 
           15         return (*t == c) ? (char *) t : NULL;
           16 }