Requirement: the AddRegistration method in the RegistrationDB class should accept a Registration object and return a Boolean value that indicates if the operation was successful
a brief overview. Form with two combo boxes and a button, when you click the button the data from the combo boxes is entered into a table in the connected database...
I'm trying to test if a character is a vowel. I made a separate function for the test, I'm not really sure how to get my return value to output whenever I call the function from main?
Also, I'm not good with while loops and can't figure out how to get it to continue asking whether or not the user wants to keep entering values.
#include <cstdlib>
#include <iostream>
using namespace std;
bool isVowel(bool);
int main(int argc, char *argv[]) {
char var1, cont;
[Code] ....
I need to create a loop to return a minimum value using a boolean variable but don't quite understand how to format my algorithm.
#include <iostream>
using namespace std;
int main() {
bool first = true;
while (first) {
cout << "Enter a number (X to exit): ";
int num;
[Code]....
I know its jacked up any comments in the code would be great I need to finish the program but also understand it.
How can I return other object's value in a function(see code and comments)?
Person.h
Code:
#include <iostream>
#include <string>
using namespace std;
class Person{
public:
Person();
Person(string pname, int page);
[Code] ....
Is it valid for an object to return an object of they same type? GetBlock method
class memBlock {
private:
char *mem;
unsigned long length;
public:
memBlock(char *data,unsigned long startPoint, unsigned long endPoint) {
[Code] .....
I am new to c++ and trying to learn. for instance. i have a struct and method.I am trying to learn what i can do with the method if i define the return type as struct type.
struct S {
int age;
string name;
};
S method() {
//what i can do in here. with the Struct. I mean can i reach members of the struct. etc
}
Try to implement overloading << operator. If I done it void then everything work fine (see comment out) if I make it class of ostream& then the operator return to me some memory address.
Code:
#ifndef Point_HPP // anti multiply including gates
#define Point_HPP
#include <sstream>
class Point {
private:// declaration of private data members
double x;// X coordinate
double y;// Y coordinate
[Code] .....
ive done a code for taxi's that arrive and depart, but i was wondering how i can use names of taxis as registration instead of numbers?
View 1 Replies View RelatedI have a text file containing the names and surnames of enrollment numbers and grades of students , looks like this:
RIKI Rikic E2345678 10
JUPI jupic E1232345 9
Etc ......)
I'm interested in sorting by name and surname, registration number and grade.My example:
struct student {
string name;
string surname;
string enrollment;
int grade;
};
and in the main program
int main () {
Student STUDENT;
/ / Code to read a text file that I wrote so I have ...
switch ()
case '1 ': / / sort by name
case 2: / / by surname
Case 3 / / by enrollment
Case 4 / / by grade
this sort we are not going very well .
I have been creating this program for a student registration system. For the file handling So far I can write in to a file , view all records, and search a single record. now i got the problem with updating details . my coding is as bellow ..
void file_update() {
int r;
struct student stu;
fstream stu_file;
cout <<"========Update Record======"<< endl;
stu_file.open("student.txt", ios::app );
[Code] ....
My problem is it won't update the record. it just adding a new record.
why it doesn't enable to register except one time
View 1 Replies View RelatedAm i using boolean values correctly? our professor wanted boolean value use for the if and else statements.
Code:
#include <stdio.h>
#include <math.h>
#define GRAVITY 9.8
#define LIMIT 500
#define SEC 5
[Code] ....
I made some research on how to negate a boolean value but none seemed to work. Ok, so I have the following code:
Code:
#include <iostream>
using namespace std;
int main() {
bool Turn = true;
for (int i = 1; i < 11; i++)
[Code]....
As of now the code prints "XXXXXXXXXX". And I want it to print "XOXOXOXOXO", so I tried 2 different things, which did not work:
Code:
#include <iostream>
using namespace std;
int main()
{
bool Turn = true;
for (int i = 1; i < 11; i++)
{
[Code]...
Code:
#include <iostream>
using namespace std;
int main()
{
bool Turn = true;
for (int i = 1; i < 11; i++)
[Code]...
Ok so I made those changes so that the boolean 'Turn' would change everytime the loop executed. Guess it doesn't work.
Let's say I have a product that needs service after 500 hours at 100 RPM. I can dsiplay the remaining hours only as an integer and we only have integer math. Management wants it to display 500 for the first hour, not 499 after the first minute is ticked off. But after a few minutes fullHours will be 499 and partialHours will have some value. I have 3 ways to determine displayHours to suit management and I want to know if the first is ligit.
short fullHours = 500;
short partialHours = 0;
short displayedHours = 0;
// Method 1 - Is is Kosher to cast a boolean as an int? Is TRUE always a 1 or is that a bad assumption?
displayedHours = fullHours + (short) (partialHours != 0);
//Method 2 - Works but some have disdain for the ternary conditional
displayHours = fullHours + (partialHours ? 1 : 0);
//Method 3 - seems a bit pedantic
displayHours = fullHours;
if (partialHours != 0) {
displayHours++;
}
Is the boolean function already defined under the default headers? Else, how would I create one? Would this work? :
#define true 1
#define false 0
typedef int bool;
Bool x=true;
i have a Boolean function containing 2D dynamic array, it'll retain either 0 or 1, how can i delete the dynamic array?
bool something (int** a,int b, int c) {
int **arr = new int*[b];
for(int i=0;i<b;i++)
arr[i]= new int[c];
if (...) return 0;
else ...
if (...) return 0;
}
I have my Arduino send the following string every second:
69.4,69.4,69.4,69.4,69.4,69.4,8.42,100,100,50,50,20,16,10,14
and i currently have my C# code split it and send the values to corresponding text boxes:
// SERIAL READS:
private void myport_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e) {
string RxData = myport.ReadLine();
this.BeginInvoke(new LineReceivedEvent(LineReceived), RxData);
[Code] ....
Now if i were to add true/false values to my arduino string, im not sure to read it. I would like the bool values to enable/disable led jpegs to simulate output status.
rly1_led.enable = newData[15];// if true
Ive tried everything and just cant figure it out. This is my first C# project.
In the following example, how 'd I use sprintf when I have a boolean type of variable?
Code:
char s[64];
bool bVar = false;
sprintf(s, "This is a boolean variable bVar = %?", bVar);
What is supposed to replace ? in the sprintf statement ?
I need writing a macro that would return true/false (1/0) )value. I want to check if a certain element exists in the array. The macro will accept array, its size, and the value to be compared, and must return yes or no. Here is the code that I have written:
Code:
#define EXISTS(T, a, n, val) do {
char ret=0;
T *a_ = (a);
size_t n_ = (n);
for (; n_ > 0; --n_, ++a_){
ret = (*a_ == val);
}
}
while(0)
How can I get the result from this macro.
Question for coding transivity in c++
a->b b->c then a->c
It should contain a main code reading from boolean matrix class. for ex)input file is
8
0 1
1 2
2 3
3 4
4 5
5 6
6 7
8 is the number of no.
what program should do.
1. check if 0->7 first(0th element)->last
2. check every 5th(5,10,15...) element is to last 5->7
I am writing a code where I have to find out the spot a letter is in. I am getting an error with assigning a function using a boolean operator.
bool is_member(const vector<char> & list, char character) {
for(int i=0; i < list.size(); i++) {
if(character==list[i]) {
return(true);
[Code] .....
My constant vector list is { 'a', 'e', 'i', 'o', 'u', 'y'}. My error comes in on line 20. I am not calling the boolean correctly. If I type in the letter "i". Then the function should output 2 since i is in the 2nd index spot of my vector list. How to fix my error? I am not understanding why my line of code is not working.
I have a bool type function and set it to explicitly return false, but I am still getting true as the return.
#include <iostream>
#include <fstream>
using namespace std;
int main(int argc, char* argv[]){
double coeffs[3];
double roots[2];
[code].....
So I want to go from having 0 or 1 to having words like false or true. I did it with an if statement earlier today, but I had to get rid of the whole bool thing. I made the variable just a float. But he requires we use bool. Here is my code:
Car y;
cout << "Initial value for the Car: " << endl;
cout << "Age= " << y.getAge() << " years old. The Price= $" << y.getPrice() << endl;
y.setAge(8);
y.setPrice(12000);
y.setRaceCarStatus(true);
cout << "Modified value for the Car: " << endl;
[Code]...
I commented (//) the if statement that I had earlier. If I set RacecarStatus to True, is cout's 1. The starred (*) line right above the comments is the line that I was required to add. I want to cout the actual word true. The one I had this morning won't work anymore.
My assignment : "Input the answer as the words true or false and put the user's answer in a boolean alphabetic variable."
My code:
bool T;
cout << "Type 'true' for lowercase or 'false' for uppercase";
cin >> T;
if (T == "true") {
cout << "Enter a whole number in decimal base: ";
cin >> dec;
cout.setf(ios::showbase);
cout << "Decimal " << dec << " to Hexadecimal with lowercase: " << setbase(16) << dec;
}
I'm not sure how to get 'true' as user-input as true for bool.
ive written a simple code but throws an error in C#, why is this happen.
bool inputValue = Convert.ToBoolean(Console.ReadLine());
Console.WriteLine(inputvalue);
Console.ReadLine();
It involves some discrete mathematics. Any code snippet to get me started?
View 3 Replies View Related