how to create expander dynamically?

How to create a char array dynamically according to the length of user input string?

• The user should not have to enter the length of the string. e.g if user enters "abcd" the program should create a char array of 5 bytes to store it (1 byte for NULL). similarly if user enters "123456789" the program should create a char array of 10 bytes.

• Answer:

  char *RS() { char x[100], *p; scanf("%s", x); //else you may make x as argument p=(char *) malloc(strlen(x)+1); strcpy(p,x); return p; } replace the following in case of C++ p=new char[strlen(x)+1]; Do make sure you include string.h Now we get the address of the string for which memory is allocated dynamically and occupies number of elements +1 bytes