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  1.  
  2. #include <iostream>
  3. #include <string.h>
  4. using namespace std;
  5. #define MAX 300
  6.  
  7. void DemKyTu(char s[]);
  8. int myStrcmp(char s1[MAX], char s2[MAX]);
  9. int myStrlen(char s[], int k);
  10.  
  11. int main()
  12. {
  13.     char s[MAX];
  14.     //gets(s);	//Nhap chuoi s
  15.     cin.getline(s, MAX);
  16.     if(myStrcmp(s, "") == 0)
  17.         cout << "Chuoi rong." << endl;
  18.     else
  19.         DemKyTu(s);
  20.     return 0;
  21. }
  22.  
  23. int myStrcmp(char s1[MAX], char s2[MAX])
  24. {
  25.     if(s1[0] == s2[0])
  26.         return 0;
  27.     return 1;
  28. }
  29.  
  30. void DemKyTu(char s[])
  31. {
  32.     int arr[500], cnt[500];
  33.     for(int i = 0; i < 500; i++)
  34.         arr[i] = 0, cnt[i] = 0;
  35.     int i = 0;
  36.     while(s[i] != '\0')
  37.         arr[int(s[i++])]++;
  38.     i = 0;
  39.     while(s[i] != '\0')
  40.     {
  41.         if(cnt[s[i]] > 0)
  42.         {
  43.             i++;
  44.             continue;
  45.         }
  46.         cnt[s[i]]++;
  47.         cout << s[i] << ": " << arr[int(s[i++])] << '\n';
  48.     }
  49. }
  50.  
  51.  
Success #stdin #stdout 0s 5280KB
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stdin
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Standard input is empty
stdout
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Chuoi rong.
https://ideone.com/I5UbZh
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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