Question $2$: $[3$ marks$]$ Implement the following non$-$member function, which receives a queue containing a mathematical expression and a stack for storing the result of the function.

void parse$($QueueDLL$-\frac{+}{({)}^{**}}={\{}^{\text{'}}{1}^{\text{'}},{?}^{\text{'}}{2}^{\text{'}},{?}^{\text{'}}{3}^{\text{'}},{?}^{\text{'}}{4}^{\text{'}}\}={\{}^1+{?}^{\text{'}},{?}^{\text{'}}-1,{?}^{\text{'}}+1\}larrTT$