C Program to copy content of one File into another File
We already know how to open a file, read contents of a file and write into a file. So in this program, we will read from one file and simultaneously write into the other file, till we reach end of first file.
File_1.txt is the file with content and,
File_2.txt is the file in which content of File_1
will be copied.
FILE *fp1, *fp2;
if ((fp1 = fopen("File_1.txt", "r")) == NULL)
printf("\nFile cannot be opened.");
printf("\nFile opened for copy...\n ");
fp2 = fopen("File_2.txt", "w");
fseek(fp1, 0L, SEEK_END); // File pointer at end of file
pos = ftell(fp1);
fseek(fp1, 0L, SEEK_SET); // File pointer set at start
ch = fgetc(fp1); // Copying file character by character