getBalance function
Implementation
Future <int> getBalance()async{
int amount = 0;
int income = await getIncomes();
int savings = await getSavings();
int expense = await getExpense();
amount = income - expense - savings;
c.userPersonalAnalysis.addIf(!c.userPersonalAnalysis.containsValue(amount), "Total Amount",c.format.format(amount.toString()));
return amount;
}