Write_A_Program_To_Copy_The_Contents_One_Of_One_File_Into_Another_File

 #include<stdio.h>
	#include<process.h>
	void main() 
	{
		FILE *fp1, *fp2;
		char a;
		clrscr();
		fp1 = fopen("test.txt", "r");
		if (fp1 == NULL) 
		{
			puts("cannot open this file");
			exit(1);
		}
		fp2 = fopen("test1.txt", "w");
		if (fp2 == NULL) 
		{
			puts("Not able to open this file");
			fclose(fp1);
			exit(1);
		}
		do {
			a = fgetc(fp1);
			fputc(a, fp2);
		} while (a != EOF);
		fcloseall();
		getch();
	}