Thread: The project programming C problem, please help seriously>.<

Our college changes 18 weeks semester to 16 semester, so our CS professor cannot finish teaching the last important chapter which is related with my problem.

This is program C problem

Anyone can help me with this problem, please!!!!!!!!!
This is the problem:
3. Several input text files have been provided as input to your program.
a) Write a function to combine these files into a single file.
b) Write a function to take care of multiple spaces and replace each occurrence of a multiple spaces with a single space.
c) Write a function to examine the words in your text file and count the number of words. Words are separated by white spaces i.e. space, newlines or tabs.
d) Write a function to count the word length in the file. Do not count punctuation characters when determining word length. Report on the screen the shortest and longest words.
Test all the above functions. Try it first by using your own text files" Myfile1" and" Myfile2" (write two short text files, about ten words each). Then use the data posted http://www.mtsac.edu/rvhpop/proj4-110.txt
the hint is that it is similar to this code:

Code:

#include <stdio.h>

main()
{
FILE
*inptr, *outptr;
int 
c,empno;
float
pay;
char
empname[20];
/************************************************** **************/
/* open the input and the temporary files, with error checking */
/************************************************** **************/
inptr = fopen("payrates", "r");
if (inptr == NULL)
{
printf("Problem opening file \"payrates\" \n");
exit(1);
}
outptr = fopen("tempfile","w");
if (outptr == NULL)
{
printf("Problem opening output file...\n");
exit(1);
}
/************************************************** **************/
/* read the file, update the pay field, write to the temp file */
/************************************************** **************/

c = fscanf(inptr,"%d %s %f",&empno, empname, &pay);
while (c != EOF)
{
pay = pay*1.05;
fprintf(outptr,"%4d %20s %6.2f\n",empno,empname,pay);
c = fscanf(inptr,"%d %s %f",&empno, empname, &pay);
}
/************************************************** **************/
/* make sure you close the files, otherwise remove and rename */
/* will not work correctly. */
/************************************************** **************/
fclose(inptr);
fclose(outptr);
/************************************************** **************/
/* remove the old "payrates" file, rename "tempfile" "payrates" */
/* note the error checking. */
/************************************************** **************/
/* USE remove ON THE MAC SYSTEMS, unlink ON UNIX */
/*if((remove("payrates")) == -1) */
if((unlink("payrates")) == -1)
{
printf("remove didn't work...\n");
}
if((rename("tempfile","payrates")) != 0)
{
printf("rename error...\n");
}
}

Pleas help
My email: <<snipped - this isn't a homework to email delivery service>>

The copy file chapter is the last chapter we have but the professor just said it was not hard last week. After that we still need to work on lab and review final,so he just give us this problem without explaination. We only have one day class experience with copying file and something like input or output. The 16weeks are not all about copying files.

Please help me out.................Thx..........@.@

1. Open a new file for writing.
2. Open one of the existing files for reading.
3. In a loop, read the existing file's contents into a buffer. Write this buffer to the new file.
4. Once you have reached the end of the existing file, open the other existing file and do the same thing.
5. Close all files.

I open the new file,but how to do the second step.
This is my first code:

Code:

#include <stdio.h>

main()
{
	char
		filename[100];
	int
		c;
	FILE
		*inptr;

	printf("\nPlease enter a file name: ");
	scanf("%s",filename);
	printf("The file name you entered was %s\n",filename);
	inptr = fopen(filename,"w+");
	if(inptr == NULL)
	{
		printf("problems opening file...\n");
	}
	}

How to start to read the these files.

Thanks a lot~~ssharish2005
But I still confuse with the step 2 and step 3
In a loop, read the existing file's contents into a buffer. Write this buffer to the new file.
So I simply put what ssharish2005 said with my first code:

Code:

#include <stdio.h>

main()
{
		FILE
		*inptr,*outptr;
	char
		filename[100]; char str[BUFSIZ];
	int
		c;
	{
	printf("\nPlease enter a file name: ");
	scanf("%s",filename);
	printf("The file name you entered was %s\n",filename);
	inptr = fopen(filename,"w+");
	if(inptr == NULL)
	{
	 if((outptr=fopen("Myfile1.txt","r")) == NULL)
	 if((outptr=fopen("Myfile2.txt","r")) == NULL)
	 if((outptr=fopen("Myfile3.txt","r")) == NULL)
	 {
		  printf("Error: File cannot be opened\n");
		  getchar();
		  return 1;
	 }
	 else
	 {
		  while(fgets(str,BUFSIZ,stdin) != NULL)
					 printf("%s\n",str);
	 }

	 getchar();
	 return 0;
	 }
}
}

I put three reading code, then I don't know how to continue.......
I think it's very weird

My professor's website has three files I need to combine,so I put reading Myfile1~Myfile3
http://www.mtsac.edu/rvhpop/proj4-110.txt

Please help me out with this problem because I have difficulty to understand the CS course
Language problem maybe.

Please!!!!!!

Code:

while(fgets(str,BUFSIZ,stdin) != NULL)

Change stdin to outptr

ohh mna, u will have to look through some syntax error from you code. Did u compile your program.

ssharish2005

printf("%s\n",str); - I thought you want to save strings into file not print them on the screen?

It looks like he just copied my code

ssharish2005