What is wrong with this piece of code?

#include <iostream>
char str[20]’
int main(){
std::cout << “What’s your name? “;
str << std::cin
std::cout << “Hello, ” << str;
return 0;
}

• The main function is supposed to have a void return type.
• std::cin and std::cout are invalid. The correct names for the character input and output streams are cin and cout.
• The address of str is supposed to be used. That is &str instead of str.
• The input operator flow is inverted. it should start from std::cin and then flow (>>) into str.