Can I write & read file in same program?

Here is my problem:
Write a C program that will read and display every second character in the file named test.dat.

Here is the cod I have so far:

Code:

#include <stdio.h>
int main()
{
	
     	     FILE *outfile;
                     char data[40] = "kTjHdIjSo kInSg xAc rCv hPhRyOmGqRaAeM";
	     outfile = fopen("test.dat","w");
	     if (outfile == NULL)
	      {
		    printf("\nFailed to open the file.\n");
	
	      }
	     fprintf(outfile,"%-40s\n",data[40]);
	     fclose(outfile);
	
	
	
	FILE *infile;
	infile = fopen("test.dat","r");
	if (infile == NULL)
	{
		printf("\nFailed to open the file.\n");
		
	}
	
	while (fscanf(infile, "%s",data) !=EOF)
		printf("%-40s\n",data);
	fclose(infile);
	
	
	
	
	return 0;
}

I was wondering can I make the test.dat file at the beginning of the program and then access it right after that? Also does anyone have any ideas on how to read the 2nd character? I was trying to spell out a message once I got it to work. I was thinking a FOR loop but not sure how to make it work. Can I increment by 2 and if so how? Thanks for helping me out guys. Also how do I get this to indent so the code is easier to read? It looks fine in the message box.

Thanks for the help Salem!

One more question though, I tried a FOR loop to scan every 2nd number but I guess I didn't set it up right. I just kept getting everything instead of the message I tried to embed. Any ideas on how to make this work? Here's the new code:

Code:

#include <stdio.h>
int main()
{
	int i;
	FILE *infile;
	FILE *outfile;
    char data[40] = "kTjHdIjSo kInSg xAc rCv hPhRyOmGqRaAeM";
	outfile = fopen("test.dat","w");
	if (outfile == NULL)
	{
		printf("\nFailed to open the file.\n");
	
	}
	fprintf(outfile,"%-40s\n",data);
	fclose(outfile);
	
	
	
	
	infile = fopen("test.dat","r");
	if (infile == NULL)
	{
		printf("\nFailed to open the file.\n");
		
	}
	
	while (fscanf(infile, "%s",data) !=EOF)
		printf("%-40s\n",data);
	fclose(infile);
	
	
	
	
	return 0;
}

>Any ideas on how to make this work?

Code:

#include <stdio.h>

int main(void)
{
   char data[] = "kTjHdIjSo kInSg xAc rCv hPhRyOmGqRaAeM";
   /*
    * Create the file. Write 'data' string followed by newline.
    */
   FILE *file = fopen("test.dat", "w");
   if ( file != NULL )
   {
      fprintf(file, "%s\n", data);
      fclose(file);
   }
   /*
    * Read the file one char at a time; write every other char.
    */
   file = fopen("test.dat", "r");
   if ( file != NULL )
   {
      int i = 0; /* skip the first char */
      for ( ;; )
      {
         int ch = fgetc(file); /* read each char from file */
         if ( ch == EOF )
         {
            break;
         }
         if ( i ) /* print every other char */
         {
            putchar(ch);
         }
         i = !i; /* toggle 'i' to print every other char */
      }
      putchar('\n');
      fclose(file);
   }
   return 0;
}

/* my output
THIS IS A C PROGRAM
*/