How to export results to file using C language

You Dear programmers. You want to write a small program the following in C with the following requirements.
I know you only education only save.
Title article:
allows users to enter into a series of four integer numbers. Input process ends when the user

Click the "T".
When the input end of the production results of the input file c: \ ketqua.txt elephant following specifications:

eg I type in the following
0001
0005
0254
1234
export the results to file with the following ketqua.txt
0000001,000005,000254,001234
(ie add two numbers 0 to the result. At the same time each result added a comma).
Thank your help

// I am a beginner so your sympathy for me

We tend not to write the code for you but if you at least try to start we can help from there....

Thank you for visiting my article

I understand this is not acceptable for a programmer, while I dont know well about the C language for much. This is the fault of myself, I do not have a document to refer to the beginning of this language (my own and no one up carefully for me)

// Version Information sympathy

In general, it sounds like you'll need to
#include <stdio.h>

as your only header file, and then start right in on your

int main() {

and declare 4 integers:

int num1, num2, num3, num4;

and maybe use a simple scanf("%d", &num1), repeating 3 more times with the other int variable names.

I'm not sure what you need to do with the numbers then, but code this much up, and let's see where you stand with this, OK?

If you want to print a number with a specific amount of zeros in front of it, you can use e.g.

Code:

---

printf("%06d", number);

---

Of course the same applies for functions like fprintf() which write to a file.