#include <stdio.h>
#include <stdlib.h> 
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
#include <string.h>
#include <unistd.h>

int make_connection(int, char*);

main(int argc, char *argv[])
{
	char machine[100];
	int port;
	float factor1;
	float factor2;
	float product;
	int connection;
	int i;
	int descriptor;

/*****************************************************************/

/* Check command line Arguments - Notice there are five */

        if(argc != 5) {
                printf("Usage: my_client -p # -m sss#\n");
                printf("        where -p # is port number\n");
                printf("        where -m sss is machine name\n");
                exit(0);
        }

        for( i = 0; i < 5; i++) {
                if( !strcmp(*(argv + i), "-p")) {
                        port = (int) atoi( *(argv+i+1));
                }
                if( !strcmp(*(argv + i), "-m")) {
                        strcpy(machine, *(argv+i+1));
                }
        }

        descriptor =  make_connection( port, machine );
        if(!descriptor) {
                printf("connect failure\n");
                exit(0);
        }
	printf("You have a connection to %s on port %d\n", machine, port);   

/*****************************************************************/

	connection = 1;
	while(connection != 0) { 
		printf("To disconnect, type 0, to continue, type 1\n");
		scanf("%d", &connection);
		i = write(descriptor, (char *) &connection, sizeof(int));
		printf("I have just WRITTEN %d bytes representing %d\n",i,connection);

		if(connection != 0 ) {
			printf("type the first number\n");
			scanf("%f",&factor1);	
			printf("type the second number\n");
			scanf("%f",&factor2);	
	
			i = write(descriptor, (char *) &factor1, sizeof(float));	
			printf("I have just WRITTEN %d bytes representing %f\n",i,factor1);
			i = write(descriptor, (char *) &factor2, sizeof(float));	
			printf("I have just WRITTEN %d bytes representing %f\n",i,factor2);
			i = read(descriptor, (char *) &product, sizeof(float));
			printf("I have just read %d bytes representing THE PRODUCT %f\n",i,product);
		}
	}
	close(descriptor);
	printf("Bye...\n");
}