copy wenjian.cpp

C语言相关程序

#include<stdio.h>
#include<conio.h>
#include<process.h>
char buff[32768];
main(int argc)
{
	char ch;
	FILE *fp1,*fp2;
	unsigned int bytes,bfsz=32768;
	unsigned long i=0;
	{
		if((fp1=fopen("file1.txt","r"))==NULL)
	{
		printf("can't open file .");
	exit(0);
	}
	while((ch=getchar())='\n')
		fputc(ch,fp1);
	break;
	}
	{
		if((fp2=fopen("file2.txt","w"))==NULL)
	{
		printf("can't open file .");
		exit(0);
	}
	while((ch=getchar(fp2))!=EOF)
		putchar(ch);
	break;
	}
	while(bfsz)
	{
		if(fread(buff,bfsz,1,fp1))
		{
			fwrite(buff,bfsz,1,fp2);
			i=i+bfsz;
		}
		else
		{
			fseek(fp1,i,0);
			bfsz=bfsz/2;
		}
	
	}
	fclose(fp1);
	fclose(fp2);
}