Answer:
option 1: sum++
option 2: ++sum
Step-by-step explanation:
In programming, a variable a container or memory location assigned to a value. The C++ syntax specifies the memory location type of value on the declaration. The major types of variables in C++ are; integer, float, double, char, string, and boolean.
To add 1 to an integer variable, the variable value could be summed with one and assigned to that same variable or '++before' and 'after++' with adds one to the variable before and after the execution of a statement.