declare a local variable in C++

  int x = 0;

This code declares a variable named “x” with a data type of integer and sets its initial value to 0. The “int” keyword declares that the variable is of type integer. The “x” is the variable name, which is followed by an ”=” operator and then 0, the initial value. So this line of code creates a variable named “x” that can store integer values, and sets its initial value to 0.