#include
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#include?

void?downloadbinary（int?DataSocket）{
	FILE?*fpw;
	char?filename[50];
	printf（“請輸入你要下載的文件名:“）;
	scanf（“%s“&filename）;
	//printf（“filename?to?send:%s\n“&filename）;
											//發送路徑
	int?filesendrecvlenflenstr[1024];
	if（（filesend=send（DataSocket&filenamesizeof（filename）0））==0）{
		printf（“unable?to?send?file?name\n“）;
		exit（0）;
	}
	//printf（“filename?sent:%s\n“&filename）;			

//將文件名拼接到USER后
	char?path[100]=“user/“;
	strcat（pathfilename）;	


	//printf（“path?to?be?write:%s\n“path）;
	if（（fpw=fopen（path“wb“））==NULL）{
		printf（“unable?to?write\n“）;
		exit（0）;
	}
	if（（recvlen=re