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  1. #include <stdlib.h>
  2. #include <stdio.h>
  3. #include <string.h>
  4.  
  5. int check_subsequence (char a[], char b[]) {
  6.    int c, d;
  7.  
  8.    c = d = 0;
  9.  
  10.    while (a[c] != '\0') {
  11.       while ((a[c] != b[d]) && b[d] != '\0') {
  12.          d++;
  13.       }
  14.       if (b[d] == '\0')
  15.          break;
  16.       d++;
  17.       c++;
  18.    }
  19.    if (a[c] == '\0')
  20.       return 1;
  21.    else
  22.       return 0;
  23. }
  24.  
  25. int main(int argc, const char * argv[])
  26. {
  27.     printf("%d\n",check_subsequence("67890","67"));
  28.     printf("%d\n",check_subsequence("67890","60"));
  29.     printf("%d\n",check_subsequence("67890","06"));
  30.     printf("%d\n",check_subsequence("67890","67890"));
  31.     printf("%d\n",check_subsequence("67890","789"));
  32.     printf("%d\n",check_subsequence("67890","90"));
  33. }
  34.  
Success #stdin #stdout 0s 15240KB
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https://ideone.com/zgQV63
language:
C++14 (clang 8.0)
created:
6 years ago
visibility:
public

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