I'm working on a program to store student's names, ID, and GPA, but for some reason the first and last name of the student are copied into every name of the database array once I scan them, regardless of whether or not add_student even runs.
typedef struct{
char *f_name;
char *l_name;
int stud_id;
double gpa;
} student_t;
int add_student(student_t db[], char fname[], char lname[], int iden, double grade, int db_size){
int i, error;
[Code] ....
For example, if I type "a Adam Johnson 1234 4.00" it'll add the first student with name Adam Johnson. However, if I try to add another student named "Kyle Walker", it overwrites "Adam Johnson" with "Kyle Walker" as soon as the names are scanned.
This is the first time I have encountered a "no stack." error giving me a seg fault. Anyhow, I am scanning words into a binary search tree and it is giving me a seg fault.
Here is the file (words.txt): 4 bravo alpha gamma delta
I am trying to add some data to my SQL database using EntityFramework as so:
[HttpPost] public ActionResult Add(string moduleCode) { HttpCookie cookie = Request.Cookies["UserLogin"];
[Code]....
When ever it gets to the stage of db.SaveChanges() I get this error, but using intellisense I have checked the values in the object and there are no Null fields.
Do you think It might be better to use SQLConnection instead? Also I beleive EntityFramework is more secure becuase there is no SQL Injection, is this correct? So If I do go down the SQLConnection route could this SQL Injection pose a threat?
I have written a program that stores employees in a database object. You can Add, hire, fire, promote, demote, and display employees. The program uses an interface, a database class, and an employee class with member functions.
The strange behavior is in my switch statement in interface.cpp. I have a '#' that represents a command line. Add and Display functions are ok, but if I hire, fire, promote or demote. It will display '##' for the next input. I ran the debugger and after hire/fire/promote/demote is called, the first if-statement goes to 'else' and I'm trying to figure out why.
I was created winform application with sql data base, after i created it i was converted to the installer file,for the other users but when they run the application did not connect to the database, how i fix this stuff...?
I am receiving error: "unable to open database file" using sqlite3_open function. I am using sqlite3.c (included amalgamation files). It happens only during ARM compiling/run. If I do the same at x86 compile/run everything works fine...
Afterwards I'm using this as a check throughout my application:
if (dbCount > 0) { // do something }
When I execute this code I'm getting the following error: "Operator '>' cannot be applied to operands of type 'method group' and 'int'"
So I'm guessing it has something to do with the cast of the dbCount-object but I don't understand why as I already stated that the count-object to be an Int32.
i have a vector of stores. i would like to delete the specified choice(store) from the list. Here is what i have but my erase statement is wrong and wont compile.
void Store::deleteSpecifiedStoreFromList(string choice) { for (int i = 0; i < this->stores.size(); i++) { if(this->stores[i].getStoreNames() == choice) { this->stores.erase( std::remove_if( this->stores.begin(), this->stores.end(), choice ), this->stores.end() ); } } }
I'm creating a small port scanning app which use a port range defined by user.My problem with the code is that I find it not efficient enough meaning that it ping very slow, especially when ports are not responding meaning that I must wait for the timeout before continuing to next port.
I want to make this small app threaded. The problem here is that I'm kind of blank of how to implement threading in my program. This is my code which is a method which does the actual checking, the other part of the code is a simple button with for loop for advancing my port number.
Code:
private void ScanPort(IPAddress address, int port) { using (TcpClient client = new TcpClient() { IAsyncResult result = client.BeginConnect(address, port, null, null);
if (result.AsyncWaitHandle.WaitOne((int)nudTimeout.Value, false)) txtDisplay.AppendText("Port: " + port + " is open." + Environment.NewLine); else txtDisplay.AppendText("Port: " + port + " is closed." + Environment.NewLine); } }
I have read some basic threading tutorial but I just don't know how to implement this piece of code so I can check ports much faster.
How to scan a CSV file and assigned variable to each of the integer scanned in a csv file
an example of the csv file: 0001,40,,10
How do I scan the CSV file and assign 0001 to variable student id, the 40 to variable module 01,the 1 without input entered to module02 and 10 to module03
I have initialized a multidimensional array eg char fruit[5][10]...Then I would need to read in 3 words with spaces in between from user and store in fruit[5][10] e.g "pear apple orange"
The thing is that after typing orange, when I press Enter it still prompts me to enter more characters. How can I end the scanning of characters after orange ?
I have to make a numerical integration program, how I can write my code so that the user is able to write their own function that they want to integrate?
E.g. they would see the message: 'please enter your function' and would be able to write whatever they wanted e.g. 'x +5' then this would then be integrated by the program.
I have already written a program that can integrate a known function but would prefer that the user could choose their own.
Where course code is the 4 numbers after the name together and the term is the letter and year in the last two pieces of info. I got this to work:
int main() { FILE *p; p = fopen("input.csv", "r+"); if(p == NULL) { puts("The file could not be opened");
[Code] ......
But lets say i dont know how many lines i have in my file and i want to count them and then use that size for my array so i tried this by:
int main() { FILE *p; int lines = 1; char ch; p = fopen("input.csv", "r+"); if(p == NULL) {
[Code] .....
But the second program is not working for unknown reasons. I do not get any errors but its not scanning the info because when i print the info later on it prints out random symbols.
What I'm focused on is reading in the first three numbers which I already have with fscanf and then reading in BUY TICKET with the digit afterwards. My problem is that I don't know how to reach that part of the file without scanning in something I don't want to. Also, how would I scan the number after scanning BUY TICKET? Would it be something like using %s and %d right afterwards?
I am trying to scan a 2 dimensional array to see if there are any duplicates within a row or column; i.e. the concept of a sudoku game.how to scan a row or column one at a time.
I'm trying to read from a header file to take the image dimensions and other variables but I don't understand how to iterate through the "key" so it saves each line.
This is what the header file will always look like:
!INTERFILE := !imaging modality := nucmed !version of keys := 3.3 ; !GENERAL DATA :=
[Code].....
Ideally it would just skip the keys that aren't wanted and keep moving through the lines. Should there be a for loop for the key (and if so, how does that work with pointers?) or should this method just be scratched...
I'm new to programming and I have a question about scanning numbers from a .txt file into a .c file. I have an array that has 50 integers and I want to read in 50 numbers from a .txt file. What would I type in on the command line to get the array to read in the .txt numbers?
I am trying to create an array of file names such that when I want to open one of the files, who's name is given in the array, I can call that element of the array. My code for making the array is the following,
Code: char file_name[40]; char *file_locations[N]; // array of N names (*) for(ii=0; ii<=N-1; ii++){ // printing the names of all the files P1_8mag_1.txt - P1_8mag_N.txt sprintf(file_name, "P1_8mag_%i.txt", ii+1);
[Code]....
The problem with this is that in the first step: all elements of the array "file_locations" are the name of the last file in the loop (in this case "P1_8mag_N.txt")What is wrong with this?
The following code shows bad memory access error (segmentation fault) when I run it. It does this right after it asks for name and the user has entered it.
#include <iostream> #include <sstream> using namespace std; struct Name { string first; string last;
I have .db3 file, and he has 14 tables,and every table has certain number of columns. Example i have table called "BASIC_INFO" and that table has columns "First Name", "Last Name" and "Age".
How can i get name of table and name of every column,so if i some day add column "Male" i get name of this column too. I need first to calculate number of columns,put that in some integer, and then for example create string array which will contain : array[0] = "First Name" ,array[1] = "Last Name"...
SQLiteConnection myConn = new SQLiteConnection("Data Source=" + DB3Path + ";Version=3;New=False;Compress=True;"); //string query = "Select * From " + DB3Path + ".INFORMATION_SCHEMA.COLUMNS"; string query = "Select * From BASIC_INFO.INFORMATION_SCHEMA.COLUMNS;"; SQLiteCommand sqCommand = new SQLiteCommand(query);
[Code] ....
I tried this too:
string query = "select * from INFORMATION_SCHEMA.COLUMNS" + "where TABLE_Name='BASIC_INFO'" + "order by ORDINAL_POSITION;"; string query = "SELECT TOP 0 * FROM BASIC_INFO";
