Thread: Weird socket problem

I wrote the following code:

Code:

/* prs.c */
#include <sys/types.h>                   
#include <sys/socket.h>
#include <netinet/in.h>  
#include <netdb.h> 
#include <stdio.h>   
main(int argc, char *argv[]) { 
    int port, sock, serverlen; char buf[10],move1[10],move2[10],choice,howmuch;
    int n=1,score1,score2;
    struct sockaddr_in server;
    struct sockaddr *serverptr;
    struct hostent *rem;
    if (argc < 3) {    
        printf("Please give host name and port number\n"); exit(1); }
    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
        perror("socket"); exit(1); }
    if ((rem = gethostbyname(argv[1])) == NULL) {
        perror("gethostbyname"); exit(1); }
    port = atoi(argv[2]);              
    server.sin_family = AF_INET;                 
    bcopy((char *) rem -> h_addr, (char *) &server.sin_addr,
         rem -> h_length);
    server.sin_port = htons(port); 
    serverptr = (struct sockaddr *) &server;
    serverlen = sizeof server;
    if (connect(sock, serverptr, serverlen) < 0) {
        perror("connect"); exit(1); }
    while(1) {
        bzero(buf, sizeof buf);                      
        if(read(sock,&howmuch,sizeof(int))<0) {
            perror("read");
            exit(1);
        }
        if(read(sock, buf,howmuch) < 0) {
            perror("read");
            exit(1);
        }
        if(!strcmp(buf,"STOP")) break;
        if(!strcmp(buf,"READY")) {
            printf("Give round %d play: ",n);
            choice=getchar();getchar();
            switch(choice) { 
            case 'p':
	howmuch=6;
	if(write(sock,&howmuch,sizeof(int))<0){
	    perror("read");
	    exit(1);
	}
                if(write(sock,"PAPER",6) < 0) {
                    perror("read");
                    exit(1);
                }
                strcpy(move2,"PAPER");
                break;
            case 'r':
	howmuch=5;
	if(write(sock,&howmuch,sizeof(int))<0){
                    perror("read");
                    exit(1);
                }
                if(write(sock,"ROCK",5) < 0) {
                    perror("read");
                    exit(1);
                }
                strcpy(move2,"ROCK");
                break;
            case 's':
	howmuch=9;
	if(write(sock,&howmuch,sizeof(int))<0){
                    perror("read");
                    exit(1);
                }
                if(write(sock,"SCISSORS",9)<0) {
                    perror("read");
                    exit(1);
                }
                strcpy(move2,"SCISSORS");
                break;
            default:
                printf("Invalid choice\n");
            } 
        }
        bzero(move1,sizeof move1);
        printf("%s\n",move2);             /* Here it prints as it should */
        fflush(stdout);
        if(read(sock,&howmuch,sizeof(int))<0) {
            perror("read");
            exit(1);
        }
        printf("\"%s\"\n",move2);       /* Here it doesn't print anything  */
        if(read(sock,move1,howmuch)<0) {
            perror("read");
            exit(1);
        }
        printf("Player 1:%10s  Player2:%10s \n",move1,move2);
        n++;
    }
    if(read(sock,&score1,sizeof(int))<0) {
        perror("read");
        exit(1);
    }
    if(read(sock,&score2,sizeof(int))<0) {
        perror("read");
        exit(1);
    }
    printf("Score = %d - %d\n",score1,score2);
    if(score1==score2) printf("Nobody won\n");
        else printf("You %s\n",(score1>score2?"lost":"won"));
    close(sock);            
    exit(0);
}

The problem comes in for the second printf of move2.
The command :
if(read(sock,&howmuch,sizeof(int))<0) {
perror("read");
exit(1);
}

affects the variable move2.Why does this happen?
If I don't put the command above it prints move2.
What is really happening?