CIST2361 Final Test Notes Fall 2017

Thank you Jerry Sims.

ch8 ex 13 data file

Johnson 85 83 77 91 76
Aniston 80 90 95 93 48
Cooper 78 81 11 90 73
Gupta 92 83 30 69 87
Blair 23 45 96 38 59
Clark 60 85 45 39 67
Kennedy 77 31 52 74 83
Bronson 93 94 89 77 97
Sunny 79 85 28 93 82
Smith 85 72 49 75 63

Output file:

Name        Test 1  Test 2  Test 3  Test 4  Test 5   Average   Grade
Johnson      85.00   83.00   77.00   91.00   76.00     82.40     B
Aniston      80.00   90.00   95.00   93.00   48.00     81.20     B
Cooper       78.00   81.00   11.00   90.00   73.00     66.60     D
Gupta        92.00   83.00   30.00   69.00   87.00     72.20     C
Blair        23.00   45.00   96.00   38.00   59.00     52.20     F
Clark        60.00   85.00   45.00   39.00   67.00     59.20     F
Kennedy      77.00   31.00   52.00   74.00   83.00     63.40     D
Bronson      93.00   94.00   89.00   77.00   97.00     90.00     A
Sunny        79.00   85.00   28.00   93.00   82.00     73.40     C
Smith        85.00   72.00   49.00   75.00   63.00     68.80     D

Midterm Review Fall 2017

Ch3 Demo

Ch3 Demo here

Unknown Error

If you get the Unknown Error with MS Visual Studio 2017 do thi: I have a same problem after update VS 2017 Enterprise to the build 26228.9. Repair installation doesn't fix anything. Still I got "Unknown error" message immediately after start VS2017. Fixing is possible by removing this folder: "C:\Users\USER_NAME\AppData\Local\Microsoft\VisualStudio\15.0_xxxxxxx"

IDE

IDE on GeeksForGeeks

Learn CPP: C++ Tutorials

C++ Tutorials

Output Stream Formatting

 Output Stream Formatting

CH3 EX1 inData.txt

Giselle Robinson Accounting
5600 5 30
450 9
75 1.5

In c++ the dot is an operator, what does it do

when you pass the if or of stream to a variable as a function how do you pass it

what do you put in front of a logical expression to reverse its value

4 choices: only one of them is a reserve word

++ operator  : preincrement and postincrement:
Int a = 0
Int b = 0



B = ++A; means 1 is added to A then B becomes A: Preoperator
B = A++; means B becomes A then 1 is added to A: Postoperator

what is a valid char?

7 fill in the blanks, rest are multiple choice, total of 32 questions.

question 13 may want to use the compiler

For loop printing out the values of an array

DO you know the length of a string from looking at it?

calling conventions: two perspectives of a function: formal or actual: perspective
of the caller or the perspective of the called
static_cast{int}

two dimensional array
index operators

Member access specifier for a class
Inheritance: Base class and derived class?

which of the following class definitions makes the public members of the class A
class become the public members of the class B class

Question 26: Series of expressions: which one will evaluate to true? pick the one
that is ALWAYS true

Test does end with true or false questions actually

enum: understand the syntax

what is Macgyver's first name?

TO develop a program to solve a problem, you start by analyzing the problem.

winsoc demo

client src
server src

Say 'Hello World' in 28 Different Programming Languages

Hello World!

MidTerm Review Spring 2017

9 t/f

20 multiple choice

• char  extraction operator (>>) how it behaves.  

• flag control while loop do you use bool value? yes

• while loop ( ) <----- div="">

• how many times does a for loop execute/iterate. for(int i = 1; i<5 4="" div="" false="" i="" is="" so="" times.="" whenever="">

• know pre and post  ++x(pre)/x++(post)

o ex.1

o x = 5;

o x++ = 5 //x = 6

o ++x=  7

o ex.2 a = 1;

o b = 0;

o b = ++a;

o a = 2;

o b = 2 ;

o -------------

o b = a++;

o b = 1;

• prototyping a function:

• #include

• using namespace std;

• void protoTypedFunction(int,int);   the prototype

• know what an infinite loop is:

o ex: while(true)

• A while loop tell the output of it.

• Part of dev environment combines our pro./prog. from - assembler linker, decoder, complier.

• Know this something:

o cin >> x >> y;

o stdin: 5, 6;  x = 5 y = 6

• interger division

• 19 / 7 =  2

• length of a string.

o string name = "Billy" 

o length = 5

• cout << pow(pow(num, num), number) << endl;

o pow = power operator from cmath/math.h.

o pow(9,3) = 9^3 =  9 * 9 * 9

• Pre increment operation example. Break it down into 2 steps.

• Ifstream <--- 160.="" a="" div="" file.="" opening="" page="">

• Ascii has 128 characters

o Other one has 255 characters.

o Unicode has 65535 characters

Scotland Study Abroad this Summer

Click here for details...

WinSock Server

// WinSockServer.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#undef UNICODE

#define WIN32_LEAN_AND_MEAN

#include 
#include 
#include 
#include 
#include 

// Need to link with Ws2_32.lib
#pragma comment (lib, "Ws2_32.lib")
// #pragma comment (lib, "Mswsock.lib")

#define DEFAULT_BUFLEN 512
#define DEFAULT_PORT "27015"

int __cdecl main(void)
{
 WSADATA wsaData;
 int iResult;

 SOCKET ListenSocket = INVALID_SOCKET;
 SOCKET ClientSocket = INVALID_SOCKET;

 struct addrinfo *result = NULL;
 struct addrinfo hints;

 int iSendResult;
 char recvbuf[DEFAULT_BUFLEN];
 int recvbuflen = DEFAULT_BUFLEN;

 // Initialize Winsock
 iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
 if (iResult != 0) {
  printf("WSAStartup failed with error: %d\n", iResult);
  return 1;
 }

 ZeroMemory(&hints, sizeof(hints));
 hints.ai_family = AF_INET;
 hints.ai_socktype = SOCK_STREAM;
 hints.ai_protocol = IPPROTO_TCP;
 hints.ai_flags = AI_PASSIVE;

 // Resolve the server address and port
 iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result);
 if (iResult != 0) {
  printf("getaddrinfo failed with error: %d\n", iResult);
  WSACleanup();
  return 1;
 }

 // Create a SOCKET for connecting to server
 ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
 if (ListenSocket == INVALID_SOCKET) {
  printf("socket failed with error: %ld\n", WSAGetLastError());
  freeaddrinfo(result);
  WSACleanup();
  return 1;
 }

 // Setup the TCP listening socket
 iResult = bind(ListenSocket, result->ai_addr, (int)result->ai_addrlen);
 if (iResult == SOCKET_ERROR) {
  printf("bind failed with error: %d\n", WSAGetLastError());
  freeaddrinfo(result);
  closesocket(ListenSocket);
  WSACleanup();
  return 1;
 }

 freeaddrinfo(result);

 iResult = listen(ListenSocket, SOMAXCONN);
 if (iResult == SOCKET_ERROR) {
  printf("listen failed with error: %d\n", WSAGetLastError());
  closesocket(ListenSocket);
  WSACleanup();
  return 1;
 }

 // Accept a client socket
 ClientSocket = accept(ListenSocket, NULL, NULL);
 if (ClientSocket == INVALID_SOCKET) {
  printf("accept failed with error: %d\n", WSAGetLastError());
  closesocket(ListenSocket);
  WSACleanup();
  return 1;
 }

 // No longer need server socket
 closesocket(ListenSocket);
 
 // Receive until the peer shuts down the connection
 do {

  iResult = recv(ClientSocket, recvbuf, recvbuflen, 0);
  if (iResult > 0) {
   printf("Bytes received: %d\n", iResult);

   // Echo the buffer back to the sender
   iSendResult = send(ClientSocket, recvbuf, iResult, 0);
   iSendResult = send(ClientSocket, recvbuf, iResult, 0);
   if (iSendResult == SOCKET_ERROR) {
    printf("send failed with error: %d\n", WSAGetLastError());
    closesocket(ClientSocket);
    WSACleanup();
    return 1;
   }
   printf("Bytes sent: %d\n", iSendResult);
  }
  else if (iResult == 0)
   printf("Connection closing...\n");
  else {
   printf("recv failed with error: %d\n", WSAGetLastError());
   closesocket(ClientSocket);
   WSACleanup();
   return 1;
  }

 } while (iResult > 0);

 // shutdown the connection since we're done
 iResult = shutdown(ClientSocket, SD_SEND);
 if (iResult == SOCKET_ERROR) {
  printf("shutdown failed with error: %d\n", WSAGetLastError());
  closesocket(ClientSocket);
  WSACleanup();
  return 1;
 }

 // cleanup
 closesocket(ClientSocket);
 WSACleanup();

 return 0;
}

WinSock Client

// WinSockClient.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#define WIN32_LEAN_AND_MEAN

#include 
#include 
#include 
#include 
#include 


// Need to link with Ws2_32.lib, Mswsock.lib, and Advapi32.lib
#pragma comment (lib, "Ws2_32.lib")
#pragma comment (lib, "Mswsock.lib")
#pragma comment (lib, "AdvApi32.lib")


#define DEFAULT_BUFLEN 512
#define DEFAULT_PORT "27015"

int __cdecl main(int argc, char **argv)
{
 WSADATA wsaData;
 SOCKET ConnectSocket = INVALID_SOCKET;
 struct addrinfo *result = NULL,
  *ptr = NULL,
  hints;
 char *sendbuf = "this is a test";
 char recvbuf[DEFAULT_BUFLEN];
 int iResult;
 int recvbuflen = DEFAULT_BUFLEN;

 // Validate the parameters
 if (argc != 2) {
  printf("usage: %s server-name\n", argv[0]);
  return 1;
 }

 // Initialize Winsock
 iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
 if (iResult != 0) {
  printf("WSAStartup failed with error: %d\n", iResult);
  return 1;
 }

 ZeroMemory(&hints, sizeof(hints));
 hints.ai_family = AF_UNSPEC;
 hints.ai_socktype = SOCK_STREAM;
 hints.ai_protocol = IPPROTO_TCP;

 // Resolve the server address and port
 iResult = getaddrinfo(argv[1], DEFAULT_PORT, &hints, &result);
 if (iResult != 0) {
  printf("getaddrinfo failed with error: %d\n", iResult);
  WSACleanup();
  return 1;
 }

 // Attempt to connect to an address until one succeeds
 for (ptr = result; ptr != NULL;ptr = ptr->ai_next) {

  // Create a SOCKET for connecting to server
  ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype,
   ptr->ai_protocol);
  if (ConnectSocket == INVALID_SOCKET) {
   printf("socket failed with error: %ld\n", WSAGetLastError());
   WSACleanup();
   return 1;
  }

  // Connect to server.
  iResult = connect(ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);
  if (iResult == SOCKET_ERROR) {
   closesocket(ConnectSocket);
   ConnectSocket = INVALID_SOCKET;
   continue;
  }
  break;
 }

 freeaddrinfo(result);

 if (ConnectSocket == INVALID_SOCKET) {
  printf("Unable to connect to server!\n");
  WSACleanup();
  return 1;
 }

 // Send an initial buffer
 iResult = send(ConnectSocket, sendbuf, (int)strlen(sendbuf), 0);
 if (iResult == SOCKET_ERROR) {
  printf("send failed with error: %d\n", WSAGetLastError());
  closesocket(ConnectSocket);
  WSACleanup();
  return 1;
 }

 printf("Bytes Sent: %ld\n", iResult);

 // shutdown the connection since no more data will be sent
 iResult = shutdown(ConnectSocket, SD_SEND);
 if (iResult == SOCKET_ERROR) {
  printf("shutdown failed with error: %d\n", WSAGetLastError());
  closesocket(ConnectSocket);
  WSACleanup();
  return 1;
 }

 // Receive until the peer closes the connection
 do {

  iResult = recv(ConnectSocket, recvbuf, recvbuflen, 0);
  if (iResult > 0)
  {
   recvbuf[iResult] = NULL;
   printf("Msg: %s\nBytes received: %d\n", recvbuf, iResult);
  }
  else if (iResult == 0)
   printf("Connection closed\n");
  else
   printf("recv failed with error: %d\n", WSAGetLastError());

 } while (iResult > 0);

 // cleanup
 closesocket(ConnectSocket);
 WSACleanup();

 return 0;
}

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All of our CIST books are now availble as E-Books

76 89 150 135 200 76 12 100 150 28 178 189 167 200 175 150 87 99 129
149 176 200 87 35 157 189

#include  

using namespace std;
//cin demo with exception detection and quit
int main(void)
{
int n = 0;
char c;
   
while(cin)
{
cout << "Enter a int(q to quit): ";
cin >> n;

if(!cin)
{
cin.clear();
c=cin.peek();
if(c=='q')
break;
else
{
cout << "Oops try again\n";
cin.ignore(5000,'\n');
}
}
}
return 0;
}