C语言中复制文件

#include<stdio.h>
int main()
{
	FILE *dest_p,*source_p;
	int ch;
	source_p=fopen("1.tar.gz","rb");
	dest_p=fopen("2.tar.gz","wb");
    while((ch=getc(source_p))!=EOF)
	{
		putc(ch,dest_p);
	}

	fclose(dest_p);
	fclose(source_p);
	return 0;
}