Can someone help me ?

[ukeleke]

Could someone explain why this is "new char[_length + 1];".

  myString(char *init_val)
	{
		_length = strlen(init_val);
		str = new char[_length + 1];
		strcpy(str, init_val);
	}

[Huawei]

One character for string terminator character ('\0').

[ukeleke]

I think that the strlen(init_val) contains terminator charater ('\0). We don't have to add 1.

[cire]

I think that the strlen(init_val) contains terminator charater ('\0). We don't have to add 1.

You think wrongly. Please visit documentation before espousing your belief.

[Chervil]

strlen() does not include the terminating null character.

1 2 3 4 5 6 7 8 9 10

#include <iostream> #include <cstring> using namespace std; int main() { char str[] = "abc"; cout << "sizeof(str) = " << sizeof(str) << "\n"; cout << "strlen(str) = " << strlen(str) << "\n"; }

sizeof(str) = 4 strlen(str) = 3