소켓 프로그래밍 질문 ( 서버 , 클라이트언트 ) 통신 에러

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
 
#define MAX_BUFFER 1024
 
typedef struct USERINFO
{
	char ID;
	char PASS;
} USER;
 
USER USERDATA = {{0},{0}};
 
void Crash_Call(char *msg);
 
int main(int argc, char *argv[])
{
	WSADATA wsaData;
	SOCKET hSocket;
	int strLen;
	SOCKADDR_IN servAdr;
 
	if(argc!=3) {
		printf("Usage : %s <IP> <port>\n", argv[0]);
		exit(1);
	}
 
	if(WSAStartup(MAKEWORD(2, 2), &wsaData)!=0)
		Crash_Call("WSAStartup() error!"); 
 
	hSocket=socket(PF_INET, SOCK_STREAM, 0);   
	if(hSocket==INVALID_SOCKET)
		Crash_Call("socket() error");
 
	memset(&servAdr, 0, sizeof(servAdr));
	servAdr.sin_family= AF_INET;
	servAdr.sin_addr.s_addr=inet_addr(argv[1]);
	servAdr.sin_port=htons(atoi(argv[2]));
 
	if(connect(hSocket, (SOCKADDR*)&servAdr, sizeof(servAdr)))
		Crash_Call("connect() error!");
	else
		puts("Connected...........");
 
	system("cls");
	printf("ID / PASS : ");
	scanf("%s %s",USERDATA.ID,USERDATA.PASS);
 
	send(hSocket, USERDATA.ID, strlen(USERDATA.ID), 0);
	send(hSocket, USERDATA.PASS, strlen(USERDATA.PASS), 0);
 
		system("pause");
	closesocket(hSocket);
	WSACleanup();
	return 0;
}
 
void Crash_Call(char *msg)
{
	fputs(msg, stderr);
	fputc('\n', stderr);
	exit(1);
}

 #include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
 
#define MAX_BUFFER 256
 
typedef struct useracc
{
	char ID[20];
	char PASS[20];
} USERACC;
 
 
USERACC USER = {{0},{0}};
USERACC SUSER = {{0},{0}};
 
void Crash_Call(char * msg)
{
	fputs(msg,stderr);
	fputc('\n',stderr);
	exit(-1);
}
 
void Connect_Clntinfo(char * msg)
{
	return 0;
}
 
int main(int argc, char * argv[]) // 첫번째 인자에는 서버가 사용할 포트번호 기입
{
	FILE * userfp = NULL;
	WSADATA	wsaData;
	SOCKET hServSock, hClntSock;		
	SOCKADDR_IN servAddr, clntAddr;		
 
	int szClntAddr;
 
	if(argc!=2) 
	{
		printf("Usage : %s <port>\n", argv[0]); // 서버가 사용할 포트 입력
		exit(1);
	}
 
	if(WSAStartup(MAKEWORD(2, 2), &wsaData)!=0)
		Crash_Call("WSAStartup() error!"); 
 
	hServSock=socket(PF_INET, SOCK_STREAM, 0);
	if(hServSock==INVALID_SOCKET)
		Crash_Call("socket() error");
 
	memset(&servAddr, 0, sizeof(servAddr));
	servAddr.sin_family=AF_INET;
	servAddr.sin_addr.s_addr=htonl(INADDR_ANY);
	servAddr.sin_port=htons(atoi(argv[1]));
 
	if(bind(hServSock, (SOCKADDR*) &servAddr, sizeof(servAddr))==SOCKET_ERROR)
		Crash_Call("bind() error");  
 
	if(listen(hServSock, 5)==SOCKET_ERROR)
		Crash_Call("listen() error");
 
	szClntAddr=sizeof(clntAddr);    	
	hClntSock=accept(hServSock, (SOCKADDR*)&clntAddr,&szClntAddr);
	if(hClntSock==INVALID_SOCKET)
		Crash_Call("accept() error");  
 
	if(recv(hClntSock,USER.ID,sizeof(USER.ID)-1,0)) {
		Crash_Call("recv() error");
	}
	if(recv(hClntSock,USER.PASS,sizeof(USER.PASS)-1,0)) {
		Crash_Call("recv() error");
	}
 
	userfp = fopen((char *)USER.ID,"rt");
 
	if(userfp == NULL)
	{
		printf("누군가가 계정접속에 실패했습니다!");
		return 0;
	}
 
	fgets(SUSER.PASS,256,userfp);
 
	if(!(strcmp(SUSER.PASS,USER.PASS))) {
		puts("Login 성공!");
		return 0;
	}
 
	else { puts("fuck!"); }
	closesocket(hClntSock);
	closesocket(hServSock);
	WSACleanup();
	return 0;
}