Question

Write a C Program that uses file handling operations of C language to copy the contents of a file called “original.dat” to another file called “copy2.dat”. Here, you will read and write from/to the files line by line with the help of fgets() and fputs() functions.

Sample file “original.dat” has been provided. Please note that the new file “copy2.dat” should have exactly same contents as in “original.dat”.

#include <stdio.h>
int main()
{
FILE *fptr1, *fptr2;
if((fptr1=fopen("original.dat","r"))==NULL)
printf("\n Error opening File");
if ((fptr2=fopen("copy1.dat","w"))==NULL)
printf("\n Error opening File");

char c;
while((c=fgetc(fptr1))!=EOF)
fputc(c,fptr2);
fclose(fptr1);
fclose(fptr2);
return 0;

}

Answer 1

getc() and putc() functions in c:

getc(), putc() are two file handling functions in c.Among those two functions, getc() is used to read a character from a file and putc() is used to display on standard output or write into a file

Source Code:

#include <stdio.h>
main()
{
FILE *fp1, *fp2;
char ch;
  //Opening original.dat file in read mode
if((fp1 = fopen("original.dat", "r"))==NULL)
printf("Error in opening File original.dat\n");
  //Opening file copy1.dat in write mode
if((fp2 = fopen("copy1.dat", "w"))==NULL)
printf("Error in opening file copy1.dat\n");
//copying the contents from original.dat file to copy1.dat file
while((ch = getc(fp1)) != EOF)
putc(ch, fp2);
//closing the file pointers for both files
fclose(fp1);
fclose(fp2);
getch();
}

Before Execution:

After Execution: