C++ error " Lvalue required as left operand of assignment"

Question

#include <iostream>

int main() {
std::cout<<"you are trying to break into a secret lab."<<std::endl;
std::cout<<"you need to enter 3 digits on a security lockpad."<<std::endl;
std::cout<<"the only information you have about the 3 digits is that the sum of the three digits is 9"<<std::endl ;
std::cout<<"and that their product is 24.please note that you have to enter the digits from the lowest to the highest"<<std::endl;

int CodeA=2;
int CodeB=3;
int CodeC=4;
int Code1;
int Code2;
int Code3;

std::cin>> Code1, Code2, Code3;
if(Code1=CodeA&&Code2=CodeB&&Code3=CodeC)
{
std::cout<<"Success,the door opens!";
}
else{
std::cout<<"wrong combination,try again!"
;}

return 0;
}

Answer 1

Thank you it worked!

Answer 2

Im new to both C++ and Solo Learn so i don't know how to properly ask my question, it seems to me that the compiler is expecting the value of code1, 2 and 3 to be predefined whereas i want them to be entered by the user, can anyone tell me what's wrong with my code?