Discussions Q&R
def add(x, y):
return x + y
def do_twice(func, x, y):
return func(func(x, y), func(x, y))
a = 5
b = 10
print(do_twice(add, a, b))
Please explain step by step
Which is caller here?
Explain the 3rd and 4th line ?
why in 4th line we write add(add(x,y),add(x,y)) which is function of 1st line ?
how can we write function after return statement insted of (x+y+x+y )=30?
0 Vote
2 Réponses
If Im using a loop "for in" didnt I have to declare variable? Like: words = ["hello", "world", "spam", "eggs"]
for word in words:
print(word + "!")
variable word is not declared..
1 Vote
2 Réponses
el resultado de la siguiente sentencia
world = input ("entre valor:")
print (world + 'shop')
print (world + 'shop')
el resulta del tutorial dice que es esparado Ejemplo. sheese shop
0 Vote
2 Réponses
look at if statement
if 10 > 5:
print("10 greater than 5")
print("Program ended")
it work perfectly, but when I changed if statement to 10 = 5:
or 10 =>5:
the program runs error, otherwise using ">=", "<=", "==","<" the progam work fine.
please explain
2 Votes
4 Réponses
need help plz
0 Vote
2 Réponses
If we initialize an array of a custom class MyClass.java like this
MyClass[] myClass = new MyClass[5];
then how can we instantiate member variable of that class through its setters methods?
0 Vote
2 Réponses
explanation plzzzz!!!
0 Vote
2 Réponses
помогите с заданием
1 Vote
1 Réponse
public class Program {
public static void main(String[] args) {
int [ ] myArr = {6, 42, 3, 7};
int sum=0;
for(int x=0; x<myArr.length; x++) {
sum += myArr[x];
}
System.out.println(sum);
}
}
very lovely program. please who can explain the meaning of "+=" in the code?
0 Vote
5 Réponses
Write a code in C++, which should take the input in the form of a, b and c from user (if user enters a = 0, then an error should
0 Vote
1 Réponse
Seems like math class doesn't exist in my eclipse version in library. It asks me to create method pow when I try to check Double a = Math.pow(2,3); Any ideas?
1 Vote
1 Réponse
Wouldn't it be more efficient to write
while(num<5){
cout << "The number is" << num << endl;
num = num + 1;
}
as
while(num<5){
cout << "The number is" << num++ << endl;
}
1 Vote
2 Réponses
Assignment : • A,b,c are variables of type int while d, e f and g are of type float.
• If a= 4, b = 6 and c -3, Find
• d=3a
0 Vote
2 Réponses
public class Program {
static int div(int a, int b)
{
if(b == 0)
{
throw ArithmeticException("Division by Zero");
} else {
x = a/b;
return x;
}
}
public static void main(String[] args) {
int x= div(42,2);
System.out.println(x);
}
}
what is wrong with this code ..
0 Vote
5 Réponses
can anyone plz explain me this program step by step?#include <iostream>
using namespace std;
class MyClass {
public:
int var;
MyClass() { }
MyClass(int a)
: var(a) { }
MyClass operator+(MyClass &obj) {
MyClass res;
res.var= this->var+obj.var;
return res;
}
};
int main() {
MyClass obj1(12), obj2(55);
MyClass res = obj1+obj2;
cout << res.var;
}I am not getting the part inside operator+
0 Vote
8 Réponsespublic class Program {
public static void main(String[] args) {
int result = 0;
for (int i=0; i<5; i++) {
if (i==3) {
result += 10;
}
else {
result += i;
}
}
System.out.println(result);
}
}
The result is 17. But how? I want to understand. please help.
0 Vote
3 Réponses
>>>a=10
>>>while a<=25:
a+=2
print(a)
>>>12,......26
Why this code print up to 26 when it is less than 25?
>>>a = 10
>>>while a <= 25:
print(a)
a+=2
>>>12,.......24
What is the difference between these two code & why they give different result?
0 Vote
3 Réponses
Hi guys,i have a qus,what do the start do(obj.start())?
I will be grateful if you help me
class Loader extends Thread {
public void run() {
System.out.println("Hello");
}
}
class MyClass {
public static void main(String[ ] args) {
Loader obj = new Loader();
obj.start();
}
}
0 Vote
4 Réponses
nums = [i**2 for i in range(5)]
print(nums)
[1, 4, 9, 16]
"..what will this create..?"
"Correct" answer was:
"A list of even numbers between 0 and 18."
9 is not an even number tho.
Is this a typo or am i missunderstanding/missinterpreting?
0 Vote
3 Réponses
1. What will be the output?
1.
>>> m = [[x, x + 1 , x + 2] for x in ran
a) [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
b) [[0, 1, 2], [1, 2, 3], [2, 3, 4]]
c) [1, 2, 3, 4, 5, 6, 7, 8, 9]
d) [0, 1, 2, 1, 2, 3, 2, 3, 4]
-1 Vote
7 Réponses
hey guys, I've been trying to work out the formula 'v=I*r'. But whenever I run the program and input values for I and r, it doesn't give the right answer.
This is the code
#include <iostream>
using namespace std;
int main() {
int i,r;
int v = i*r;
cout<<"what is the value of i?\n";
cin>>i;
cout<<"what is the value of r?\n";
cin>>r;
cout<<"voltage ="<<v<<endl;
return 0;
}
p/s: I'm new to programming
1 Vote
8 Réponses
using System;
namespace GoodProgrammerTest
{
class Program
{
static void Main(string[] args)
{
Console.Write("Enter Yes or No");
Console.Write(
"Do you programme every day? : ") ;
int answer = Console.ReadLine();
if (answer =="Yes")
{
Console.WriteLine(
"You will be a good programmer");
}
else
{
Console.WriteLine(
"You will not be a good programmer");
}
}
}
}
2 Votes
3 Réponses
how can i put a program in an application ? i wrote a program with eclipse ( a calculator ) what can i do with it now ? maybe put it in an application but how ?
and is in this app (sololearn) declared how to program interactive fields ? like for calculator a field for + - * / and = ? is there any tutorial for that ?
2 Votes
5 Réponses
!["tree.jpg"](/fr/Discuss/?query="tree.jpg"){kind=link}
java class Addquot;">"quot;
quot;;">"quot;;"awesome");"dolor""haha""hihi""hoho""huhu");"ipsum""is""sit"{}+=addadd("hehe"add("lorem"add("this"classconstructor(...words)newprint()returnthis.words 1 Vote
4 Réponses
i am not getting correct even odd numbers count from given range of numbers (range -5 to 7)...
0 Vote
3 Réponses
#include <iostream>
using namespace std;
class A{
public:
void f1();
};
class B : public A{
public:
virtual void f1();
}
int main()
{
A * obj = new B;
obj.f1();
}
Ques: can we write virtual before an overridden function from the base class?? if yes which f1() should it call base class f1() or derived class f1()???
0 Vote
1 Réponse
Hey there,
I don't know why, but when I import tkinter on IDLE like this:
from tkinter import *
And I say:
window = Tk()
Even known I use python 3.2.5, which should be able to use Tkinter, the python shell raises a ValueError that says that Tk() is not defined. I am very sure I use python 3.2.5 and tutorials from the Python Foundation say that is what I have to do. But it still doesn't work.
Does anyone have an idea of how to solve this problem? Thank you!
0 Vote
3 RéponsesMatt reaches the final round of a treasure hunt. In this, he finds that as he proceeds there are flags with the number written on them at different positions. The difference between two consecutive flags can be either a or b. If he finds the number on the first flag is 0. Given three integer, first one is number of flags present, second is a and third is b. then return all the possible values for last flag for each test case.
hunt({3 1 2}) = {2 3 4}
0 Vote
2 Réponses