Hello,
I'm just a beginner (student). Now still undergo C programming class to upgrade my knowledge in C. I was asked to complete a simple program to get the output of C program in the text file as shown below. This program is to help user to consider a range of interest rates for bank loan over 10,20,30 years. Prior to get this output the user is asked to enter the amount loan and a minimum & maximum interest rate. The output has to be in the form of text file as below.

Eg. Loan Amount : xxxxxx

Interest Rate Duration Monthly Payment Total Payment
xxxxx xxxx xxxxxxxx xxxxxxxx

I'm thinking to use the following formula for calculating the monthly payment & transfer the result to "Monthly payment column" above. However, I have no idea what to do first & how to go about to get this result printed in the text file. Can I use this math equation---> payment = i*p/1-pow(1+i,-n).

Anyone has a similar program that I can use or study in order for me to get start. Your assistance is highly appreciated.

Rgds,
GKS

( Note : Formula for mthly payment = ip/1-(1+i)-n ).

Well, printf() will print to 'standard out' which can be directed to a text file.

fprintf() is what you want, though. fopen() opens the file, fprintf() writes text to it, and fclose() will close it.

If you look up those routines you'll have all that you need.

Good luck!

If you want a tut on fstream look in the tutorial fourm

Hi Chainsaw,

Thanks for your reply. I'll try to it again.