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  1. #include <stdio.h>
  2.  
  3. int strend(const char *s, const char *t)
  4. {
  5.   const char *p;
  6.   size_t n, m;
  7.  
  8.   for (p=t; *p; ++p);
  9.   m = p - t;
  10.  
  11.   for (p=s; *p; ++p);
  12.   n = p - s;
  13.  
  14.   if (n < m)
  15.     return 0;
  16.  
  17.   for (s += n - m; s != p; ++s, ++t)
  18.     if (*s != *t)
  19.       return 0;
  20.  
  21.   return 1;
  22. }
  23.  
  24. #define CHECK(s,t) printf("%-7s %-7s => %d\n", s, t, strend(s, t))
  25.  
  26. int main(void)
  27. {
  28.   CHECK("abc", "c");
  29.   CHECK("a", "a");
  30.   CHECK("a", "ab");
  31.   CHECK("abc", "");
  32.   CHECK("", "");
  33.   CHECK("aaaaa", "aaab");
  34.   CHECK("", "q");
  35.  
  36.   return 0;
  37. }
  38.  
Success #stdin #stdout 0s 5512KB
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stdin
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Standard input is empty
stdout
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abc     c       => 1
a       a       => 1
a       ab      => 0
abc             => 1
                => 1
aaaaa   aaab    => 0
        q       => 0
https://ideone.com/W8odK1
language:
C (gcc 8.3)
created:
2 years ago
visibility:
public

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