Writing a file a character at a time : File Write « File « C / ANSI-C

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C / ANSI-C » File » File Write

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Writing a file a character at a time



#include <stdio.h>

#include <string.h>



int main()

{

   char mystr[80]="asdfasdf";

   int i = 0;

   int lstr = 0;

   int mychar = 0;

   FILE *pfile = NULL;

   char *filename = "C:\\myfile.txt";



   pfile = fopen(filename, "w");

   if(pfile == NULL)

   {

     printf("Error opening %s for writing. Program terminated.", filename);

   }



   lstr = strlen( mystr );

   for(i = lstr-1 ; i >= 0 ; i--)

     fputc(mystr[i], pfile);  /* Write string to file backwards */



   fclose(pfile);



   /* Open the file for reading */

   pfile = fopen(filename, "r");

   if(pfile == NULL)

   {

     printf("Error opening %s for reading. Program terminated.", filename);

   }



   /* Read a character from the file and display it */

   while((mychar = fgetc(pfile)) != EOF)

     putchar(mychar);

   putchar('\n');



   fclose(pfile);

   remove(filename);

}

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11.	Write character to stream: how to use putc
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13.	Write character to stream: how to use fputc
14.	Write character to stdout: how to use fputchar
15.	Write string to a stream: how to use fputs
16.	Write a block of data to a stream: how to use fwrite
17.	Save and write different type of value into file
18.	Save and read string into a file
19.	Write and read the entire array in one step

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