c++ - Reverse char string with pointers -

i need reverse char string pointers. how can this? code:

    // cannot modified !!! char s[10] = "abcde"; char *ps;  // code ps = new char;  int count = 5;  (int = 0; < 10; i++) {     if (s[i] != '\0') // not null     {          ps[count - 1] = s[i];         count--;     } }  cout << "reversed = " << ps; 

sometimes if works fine, see 5 chars, reversed. see chars (looks temp symbols). miss something? thank you!

your char array "s" contains 10 chars, initialize first 6 chars of array "abcde" , \0 terminator. when loop on complete array, access not initialized chars.

i see, try write memory, didn't allocate. allocate memory 1 char "ps" pointer, try access it's memory array of chars in for-loop.

instead of using hardcoded:

int count = 5; 

you use string function strlen() determine length of c-string.

edited (untested code):

char s[10] = "abcde"; char ps[10];  (int = 0; < strlen(s); i++) {     if (s[i] == '\0') // not null     {         // stop loop, reach end of original string         break;     }     ps[strlen(s) - 1 - i]; }  // add termination char \0 ps array ps[strlen(s)] = '\0';  cout << "reversed = " << ps;