I have data like this that should be stored in a file
How do i store them in a file and be able to read them latet to do calculations with them. What is the simplest way to do this?
Eg. The W stands for Withdrawal, I for Interest and D for Deposit. So, i have a bank balance which i need to change based on which line the program read from the text file. So the program will read the first line and see a W and will then subtract 200 from the balance, etc
As i'm a newbie to C++ what is the easiest way to achieve this?
Thanks for the help and the link. For me to understand what i must do is more important than to get code. So, I know about streams yes. How do i get the info in the file? How does trans >> trantype >> amt do that? How does the program know trantype is the W, D, I's, etc?
I can write an amount like this to file - myoutfile << "3750.40 \n"; but how does the program know 3750.40 is a variable for amt? Do i need to declare all the amounts before using them?
Well, you could write a program to output the values to the file. But where would the program get its data, would it be from the user typing values perhaps? Or maybe from another file...?
As for the data in the file, by itself it has no meaning. It only becomes meaningful when you write a program to interpret the data according to your requirements. In other words, you use your understanding of the data to determine how the program needs to be written.
Ok, lets say the file is suppose to be created manually. Lets not make it complicated. So I have the file with the data. How do i get the program to read the data and store it so that it can be displayed?
So the line says W 250.00
Is the line trans >> transtype >> amt enough to store W in transtype and 250.00 in amt?