Can someone help me convert c++ into c ? the code listed below #include #include

Question

Can someone help me convert c++ into c ?

the code listed below

#include
#include
#include
#include
#include
#include
#include
#include
#include "commonhdr.h"

#define MAXHOSTNAME 256
using namespace std;

//songDet songInfm;

int display_menu()
{
int ch;
cout< cout<<" 1. ADD "< cout<<" 2. INSERT"< cout<<" 3. VIEW"< cout<<" 4. DELETE"< cout<<" 5. QUIT"< cout<<" Enter your choice :";
cin>>ch;
return ch;
}

main()
{
struct sockaddr_in remoteSocketInfo;
struct hostent *hPtr;
int socketHandle;
const char *remoteHost="localhost";
int portNumber = 8080;

bzero(&remoteSocketInfo, sizeof(sockaddr_in)); // Clear structure memory

// Get system information

if((hPtr = gethostbyname(remoteHost)) == NULL)
{
cerr << "System DNS name resolution not configured properly." << endl;
cerr << "Error number: " << ECONNREFUSED << endl;
exit(EXIT_FAILURE);
}

// create socket

if((socketHandle = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
close(socketHandle);
exit(EXIT_FAILURE);
}

// Load system information into socket data structures

memcpy((char *)&remoteSocketInfo.sin_addr, hPtr->h_addr, hPtr->h_length);
remoteSocketInfo.sin_family = AF_INET;
remoteSocketInfo.sin_port = htons((u_short)portNumber); // Set port number

if(connect(socketHandle, (struct sockaddr *)&remoteSocketInfo, sizeof(sockaddr_in)) < 0)
{
close(socketHandle);
exit(EXIT_FAILURE);
}

int rc = 0; // Actual number of bytes read by function read()
string buffer;
char buf[512];
int choice = -1;
string netBuff("");
while(buffer!="QUIT")
   {
   buffer="";
   memset(buf,'',sizeof(buf));
   choice = display_menu();
   switch(choice)
   {
case 1: buffer = "ADD";
        strcpy(buf,buffer.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Enter song Details" << endl;
       cout << "Title :";
       cin >> buffer;
       netBuff = "Title: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Artist :";
       cin >> buffer;
       netBuff = "Artist: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Album :";
       cin >> buffer;
       netBuff = "Album: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Duration :";
       cin >> buffer;
       netBuff = "Duration: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       break;

case 2: buffer = "INSERT";
        strcpy(buf,buffer.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Enter song Details" << endl;
       cout << "Title :";
       cin >> buffer;
       netBuff = "Title: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Artist :";
       cin >> buffer;
       netBuff = "Artist: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Album :";
       cin >> buffer;
       netBuff = "Album: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Duration :";
       cin >> buffer;
       netBuff = "Duration: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       break;

case 3: buffer = "VIEW";
        strcpy(buf,buffer.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Enter song Title :";
       cin >> buffer;
       netBuff = "Title: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       break;

case 4: buffer = "DELETE";
        strcpy(buf,buffer.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       cout << "Enter song Title :";
       cin >> buffer;
       netBuff = "Title: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       break;

case 5: buffer = "QUIT";
       choice =0;
       break;
   }

// strcpy(buf,buffer.c_str());
       //send(socketHandle, (songDet*)&songInfm, sizeof(songInfm), 0);
// send(socketHandle, buf, strlen(buf) + 1, 0);
  
   }
}

Explanation / Answer

//#include <iostream.h>   // input output stream header file
#include <stdio.h>   // standard input output header file
#include <stdlib.h>     // standard library header file
#include <string.h>   // header file with string function
#include <conio.h>   // console input output header file

#include "commonhdr.h"

#define MAXHOSTNAME 256
// using namespace std;

//songDet songInfm;

int display_menu()
{
int ch;
printf ( " 1. ADD   2. INSERT 3. VIEW 4. DELETE 5.QUIT ");
printf ( " Enter your choice:");
scanf("%d", &ch); // scanf ( ch
return (ch);
} /* end function display menu */

int main()   // start main
{
// convert c++ code c code
struct sockaddr_in remoteSocketInfo;
struct hostent *hPtr;
int socketHandle;
const char *remoteHost="localhost";
int portNumber = 8080;

bzero(&remoteSocketInfo, sizeof(sockaddr_in)); // Clear structure memory

/* Get system information */

if((hPtr = gethostbyname(remoteHost)) == NULL)
{
/* fprintf(stderr) is equivalent to cerr */
fprintf(stderr, "System DNS name resolution not configured properly. ");
fprintf(stderr, ""Error number: %d " , ECONNREFUSED ");
exit(EXIT_FAILURE);
} /* end if hPtr */

/* create socket   */

if((socketHandle = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
close(socketHandle);
exit(EXIT_FAILURE);
} /* end if sockt handle   */

/* Load system information into socket data structures   */

memcpy((char *)&remoteSocketInfo.sin_addr, hPtr->h_addr, hPtr->h_length);
remoteSocketInfo.sin_family = AF_INET;
remoteSocketInfo.sin_port = htons((u_short)portNumber); // Set port number

if(connect(socketHandle, (struct sockaddr *)&remoteSocketInfo, sizeof(sockaddr_in)) < 0)
{
close(socketHandle);
exit(EXIT_FAILURE);
}

int rc = 0; // Actual number of bytes read by function read()
char * buffer;
char buf[512];
int choice = -1;
char * netBuff("");
while(buffer!="QUIT")
   {
   buffer="";
   memset(buf,'',sizeof(buf));
   choice = display_menu();
   switch(choice)
   {
case 1: buffer = "ADD";
        strcpy(buf,buffer.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Enter song Details " );
       printf ( "Title :");
       scanf ( "%s", buffer);
       netBuff = "Title: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Artist :");
       scanf ( " %s", buffer);
       netBuff = "Artist: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);

printf ( "Album :)";
       scanf ( "%s", buffer);

       netBuff = "Album: " + buffer;
       strcpy(buf,netBuff.c_str());
       send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Duration :");
       scanf ( "%s", buffer);
       netBuff = "Duration: " + buffer;
       strcpy(buf,netBuff.c_str());
       send(socketHandle, buf, strlen(buf) + 1, 0);
       break;

case 2: buffer = "INSERT";
       strcpy(buf,buffer.c_str());
       send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Enter song Details " );
       printf ( "Title :");
       scanf ( "%s", buffer);
       netBuff = "Title: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Artist :");
       scanf ( "%s", buffer);
       netBuff = "Artist: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Album :");
       scanf ( "%s", buffer);
       netBuff = "Album: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Duration :");
       scanf ( "%s", buffer);
       netBuff = "Duration: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       break;

case 3: buffer = "VIEW";
        strcpy(buf,buffer.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Enter song Title :");
       scanf ( "%s", buffer);
       netBuff = "Title: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       break;

case 4: buffer = "DELETE";
        strcpy(buf,buffer.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       printf ( "Enter song Title :)";
       scanf ( "%s", buffer);
       netBuff = "Title: " + buffer;
        strcpy(buf,netBuff.c_str());
        send(socketHandle, buf, strlen(buf) + 1, 0);
       break;

case 5: buffer = "QUIT";
       choice =0;
       break;
   }   /* end switch */

/* strcpy(buf,buffer.c_str()); */
       /* send(socketHandle, (songDet*)&songInfm, sizeof(songInfm), 0); */
/* send(socketHandle, buf, strlen(buf) + 1, 0);   */

   } /* end while */
return 0; // exit
} // end of main()

/*
C++ command       equivalent C Command
comment double slash //   slash *     and   * slash
scanf            scanf      
printf           printf

*/

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