calculating someones age

[Beres]

I am trying to calculate the age of someone. I am having the user input his age as a string, but I was just doing year they were born. However i need it to calculate the date to ensure that it is before or after there birthday to get the correct age of the user. How do i compare to dates to find the users age? I am at a stand still on this, any help appreciated.

[CaptainPinko]

well you could ask them to enter their month in numeric form (ie. jan = 1, feb = 2, mar = 3... etc)

// "u" is for user, "t" is for today's
int u_year, u_mouth, u_day;
int t_year, t_month, t_day;

if ((u_month <= t_month) && (u_day <= t_day))
// already had their birthday
                 {return (u_today - t_day);}
else
// haven't had their birthday
                 {return (u_today - t_day - 1);}

[billrogers]

Hey Cap'n

not sure if your if works

it requires the month and day always to be less than.

Shouldn't it be

if(u_month < t_month || (u_month==t_month && u_day<=t_day))
{
// already had their birthday

}
else
{
// haven't had their birthday

}

[CaptainPinko]

you're right, my bad

[billrogers]

no prob Cap'n.