Question

Suppose I have a class

class person
{
char* name;
public:
void setname(const char*);
};
void person::setname(const char* p)
{
name=new char[strlen(p)];
strcpy(name,p);
name[strlen(p)]='\0';
}

My question is about the line
name=new char[strlen(p)];
suppose the p pointer is pointing to string i.e “zia” , now strlen(p) will return 3 it means we have an array of 4 characters i.e char[3] now I copy the string into the name and at the 4th location , I put the null character , what is wrong with this?????

Answer 1

You say:

we have an array of 4 characters i.e
char[3]

Surprisingly enough, char[3] is an array of THREE characters, not FOUR!