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  1. #include <iostream>
  2. #include <string.h>
  3. #include <time.h>
  4. using namespace std;
  5.  
  6. template <typename T>
  7. auto maxn(const T * pArr, int n)->decltype (*pArr)
  8. {
  9.     int f(0);
  10.     for (int i = 0; i < n; i++)
  11.         if (pArr[i] > pArr[f])
  12.             f = i;
  13.     return pArr[f];
  14. }
  15. template <>
  16. auto maxn<const char *>(const char * const *pArr, int n)->decltype(*pArr)
  17. {
  18.     int *pArr1 = new int [n];
  19.     for (int i = 0; i < n; i++)
  20.         pArr1[i] = strlen(pArr[i]);
  21.     int f(0);
  22.     for (int i = 0; i < n; i++)
  23.         if (pArr1[i] > pArr1[f])
  24.             f = i;
  25.     delete [] pArr1;
  26.     return pArr[f];
  27. }
  28. int main(int argc, char* argv[])
  29. {
  30.     srand(unsigned (time(0)));
  31.     const int k = 5;
  32.     int *pArr = new int [k];
  33.     for (int i = 0; i < k; i++)
  34.         pArr[i] = rand() % 11;
  35.     for (int i = 0; i < k; i++)
  36.         cout << pArr[i] << ' ';
  37.     cout << endl;
  38.     cout << "The max member of array is " << maxn(pArr, k) << endl;
  39.     delete [] pArr;
  40.  
  41.     double *pArr1 = new double [k];
  42.     for (int i = 0; i < k; i++)
  43.         pArr1[i] = i * 0.5;
  44.     for (int i = 0; i < k; i++)
  45.         cout << pArr1[i] << ' ';
  46.     cout << endl;
  47.     cout << "The max member of array is " << maxn(pArr1, k) << endl;
  48.     delete [] pArr1;
  49.  
  50.     char str[k][15] = {"Hello!", "Good bye!", "What's up!", "Yo, man!", "Hi, byotch!"};
  51.     char **ppStr = new char *[k];
  52.     for (int i = 0; i < k; i++)
  53.         ppStr[i] = new char [20];
  54.     for (int i = 0; i < k; i++)
  55.         memcpy(ppStr[i], str[rand() % 5], 20);
  56.     for (int i = 0; i < k; i++)
  57.         cout << ppStr[i] << endl;
  58.     cout << maxn(ppStr, k) << endl;
  59.     for (int i = 0; i < k; i++)
  60.         delete [] ppStr[i];
  61.     delete [] ppStr;
  62. //    if (_CrtDumpMemoryLeaks())
  63. //        cout << "Memory Leaks\n";
  64. //    else
  65. //        cout << "All good\n";
  66.     return 0;
  67. }
Success #stdin #stdout 0s 3476KB
comments (?)
stdin
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Standard input is empty
stdout
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6 3 10 4 8 
The max member of array is 10
0 0.5 1 1.5 2 
The max member of array is 2
Yo, man!
Hi, byotch!
Hi, byotch!
Hello!
Yo, man!
Yo, man!
https://ideone.com/pNjCZv
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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