#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
//#include <ctype.h>
//#define MAX 80
//#define PORT 8080
#define SA struct sockaddr

// Function designed for chat between client and server.
void func(int sockfd)
{
	char str[5];
	char str2[2];
	int num1, num2;
	// infinite loop for chat
	for (;;) {
		bzero(str, 5);
		bzero(str2, 2);
		printf("Enter the string : ");
		scanf("%d %s %d", &num1, &str, &num2);
		//check operator inputted
		if (strcmp(str,"+") == 0) {
			str2 = "add";
		} else if (strcmp(str,"-") == 0) {
			str2 = "sub";
		} else if (strcmp(str,"*") == 0) {
			str2 = "mul";
		} else if (strcmp(str,"/") == 0) {
			str2 = "div";
		}

		//create packet that holds the operator and the two numbers
		struct packet {
			char oper[2];
			int int1;
			int int2;
		} pkt;
		strcpy(pkt.oper, str2);
		pkt.int1 = num1;
		pkt.int2 = num2;

		send(sockfd, &pkt, sizeof(struct packet), 0);

		//while ((buff[n++] = getchar()) != '\n');
		//write(sockfd, buff, sizeof(buff));
		//bzero(buff, sizeof(buff));
		//read(sockfd, buff, sizeof(buff));
		//printf("From Server : %s", buff);

		/*if ((strncmp(buff, "exit", 4)) == 0) {
			printf("Client Exit...\n");
			break;
		}*/
	}
}

int main()
{
	int sockfd, connfd;
	struct sockaddr_in servaddr, cli;

	// socket create and varification
	sockfd = socket(AF_INET, SOCK_STREAM, 0);
	if (sockfd == -1) {
		printf("socket creation failed...\n");
		exit(0);
	}
	else
		printf("Socket successfully created..\n");
	bzero(&servaddr, sizeof(servaddr));

	// assign IP, PORT
	servaddr.sin_family = AF_INET;
	servaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
	servaddr.sin_port = htons( 8888 );

	// connect the client socket to server socket
	if (connect(sockfd, (SA*)&servaddr, sizeof(servaddr)) != 0) {
		printf("connection with the server failed...\n");
		exit(0);
	}
	else
		printf("connected to the server..\n");

	// function for chat
	func(sockfd);

	// close the socket
	close(sockfd);
}