c++ - reverse() and learning pointers -

i'm aware there many questions mine, reading several didn't me. because i'm new @ programming , having hard time pointers.

as exercise, i'm trying create function in c++ reverse inputted string. here function:

char* reverse(const char* t) {     int j, k;     char* astring = new char[100];      for(j=0, k=strlen(t)-1; j < strlen(t); j++, k--)     {         astring[j]=t[k];     }      astring[j+1]='\0';      return astring; } 

however, input doesn't reversed @ all. doing wrong?

in c++, have better, cleaner, safer, easier , more readable option - std::string.

here simple example of function reverse() returns reversed std::string:

void swap(string& str, int index1, int index2) {      char temp = str[index1];     str[index1] = str[index2];     str[index2] = temp;  }  string reverse(string str) {      int size = str.size();      (int = 0; < size / 2; i++)          swap (str, i, size - - 1);      return str;  }