print"Enter the starting amount: ";
$startAmount = <stdin>;
while($startAmount == ""){
print"Numbers only! Try again: ";
$startAmount = <stdin>;
};chomp($startAmount);

print"Enter your current age: ";
$startAge = <stdin>;
while($startAge == ""){
print"Numbers only! Try again: ";
$startAge = <stdin>;
};chomp($startAge);

print"Enter the age you want to retire: ";
$endAge = <stdin>;
while($endAge == ""){
if($endAge >= $startAge){
print"Age you want to retire must be greater than current age\n";
$endAge = <stdin>;
}#ends if
else{
print"Numbers only! Try again: ";
$endAge = <stdin>;
}#ends else
};chomp($endAge);


print "Enter amount deposited per year: ";
$yearlyDeposit = <stdin>;
chomp($yearlyDeposit);

print "Enter the Annual interest rate: ";
$annualInterest = <stdin>;
chomp($annualInterest);

print "Enter Expected Retirement Money: ";
$expectedMoney = <stdin>;
chomp($expectedMoney);

system("pause");