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Jul 29th, 2016
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  1. #include <stdio.h>
  2.  
  3. char *error(char *num)
  4. {
  5. if (*num=='\0')
  6. return NULL;
  7. if (num[0]>num[1])
  8. return &num[1];
  9. return error(num+1);
  10. }
  11.  
  12. int main()
  13. {
  14. char *str="23548";
  15. char *ans;
  16. char n[20];
  17. char num;
  18. int i=0;
  19. char t=0;
  20. printf("enter numbers\n");
  21.  
  22.  
  23. ans=error(str);
  24. printf("ans= %c\n",*ans);
  25.  
  26. i=0;
  27. while (str[i]!='\0')
  28. {
  29. if (str[i]==*ans){
  30. t=str[i-1]+1;
  31. break;
  32. }
  33.  
  34. i++;
  35. }
  36. printf("%c",t);
  37.  
  38. return 0;
  39. }
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