Q&A Discussions
Why is using "using" important? As well how to make a class that can be declared inside of a using statement.
0 Votes
2 Answers![[No Name] - avatar](https://blob.sololearn.com/avatars/f81aa1e2-7759-4408-acba-e704b46aed71.jpg)
Why does the challenges questions are of to calculate maths , it takes time ..? It should be of logical thinking..!
0 Votes
2 Answers
I don't understand why is it an syntax error when I type the following else:
can someone explain to me please.
0 Votes
2 Answers
why does the 'else' statement on this code only work on the 'if' statement before it. I want it to work for all the 'if' statements in the code (that is, if none of the 'if' statements is true, then the else statement should execute). If that is not possible, then how it can be done?
2 Votes
6 Answers
when I wrote
int x;
cin>>x;
if(10<x>15) it is always false
10<x<15 always true
10>x<15 always true
10>x>15 always false
3<x<0 always false
3>x>0 true for x less than 3
can anyone explain why this is happening????
2 Votes
3 Answers
What is the use of magic method __add__?? In below code why result not returning addition of first and second???
0 Votes
1 Answer
why in the description of type convertion there is no print command but in the "try it yourself " part?
0 Votes
1 Answer
3==6 =>0 then 1*0 = 0 and then 1+0 =1 then it is true then why CODE WORKED FOR ELSE?
1 Vote
1 Answer
See the code in the Decription and tell why adding a " \ " results in printing of "\\n" ?
0 Votes
1 Answer
Why we need to add all ORDER BY column names in SELECT clause when we are using DISTINCT in SELECT?
0 Votes
1 Answer
Why the ^ matches a begining character or group but the $ matches only the last character not a group
0 Votes
1 Answer
using with alert("this is alert"); this display a box with string in centre but also found ABOUT BLANK why this,
0 Votes
1 Answer
What is the difference between float and double variable's use and why we write f after declaration of float variable
0 Votes
1 Answer
Why does SoloLearn suggest users to be friends with other users even though they only give the option to "Follow"?
0 Votes
1 Answer
Why talk about the tools to write code but then give examples with a database that we do not have?
0 Votes
1 Answer
Why can't I rate quizzes on HTML? I can only rate every language except HTML.any of you with this problem????
0 Votes
1 Answer
why we use return in this prog.
#include <iostream>
using namespace std;
int timesTwo(int x) {
return x*2;
}
in
0 Votes
1 Answer
What is the use of magic method __add__?? In below code why result not returning addition of first and second???
0 Votes
1 AnswerIf auto increment is on, why we need to mention not Null, as the value will increment automatically from 1.
0 Votes
1 Answer
Why would my package cause the code to come up with an error when I put it int Code Playground?
0 Votes
1 Answer
I am a beginer and will like to under the reason why codes on html must be compacted before run.
-7 Votes
3 Answers
Why do we increment N by 1 after inserting an item to the mid of the array in Data Structure?
1 Vote
1 Answer
double Max = 12.7;
if (Max >= 12)
System.out.print("FRENCH"); else
System.out.print("FRIES");
Can the code be converted to Switch ?
If yes why ?
If no why?
1 Vote
2 Answers
I can't understand, why do sin(x) and tan(x) return wrong values when I put Math.PI as x. It shows 1,22 for sin and -1,22 for tan, when it should be 0 in both cases?
1 Vote
3 Answers
why sometimes the circle is forever when i input very big number to long int as i choose long int to save
0 Votes
2 Answers
why if else is not working here
public String theEnd(String str,boolean front)
{
if(front=true)
return str.substring (0,1);
else
return str.substring (str.length()-1,str.length());
}
0 Votes
2 Answers
how to show the numbers in textbox in c# . it is show to me 11 does not show 2 why ??
0 Votes
2 Answers
Why does not split the word from string list by letter by letter??? When the user input any word from list then will show split
0 Votes
1 Answer
if html is used for coding web and html5 is too used? than why we use CSS ? i think CSS play same role of HTML & HTML5
0 Votes
3 Answers
Why is the js code on the third illustration of Dom and Events displaying an uncaught error of childNodes when you invoke the fu
0 Votes
1 Answer
Why is that not all code are able run, on this app, i tried alot of project, but it didn't run.
0 Votes
1 Answer
Why the SolaLearn community is the most desirable part of the app? What if it was never introduced in the app?
1 Vote
1 Answer
Why Android Developers Goto Kolin language Instead of Java? Its this possible that android studio is now not totally depend java
1 Vote
1 Answer
Why is it that i can not be able to link the database with codes only withouth starting with the database.
1 Vote
1 Answer
why this output is 339 ???
#include<iostream>
using namespace std;
int x(int &a,int &b)
{
a=1;
b=3;
return a*b;
}
int main()
{
int a=3;
int b=4;
int c=x(b,b);
cout<<a<<b<<c;
}
0 Votes
3 Answers
Trying to code triangle numbers from 4 ie 4 + 3 + 2 + 1. Why does it not work with the while loop. Appreciate your comments...
0 Votes
2 Answers
what's wrong in calling list.len() rather len(list) .?? why python defined len() just as a normal method unlike those with dot operator ?
0 Votes
2 Answers
Error:Could not find or load java main class , why show error ,i change my drive and my class name is same ,
0 Votes
2 Answers
I am a beginner why at front its print ('Hello world!) Then answer is Hello world! But when we do programming we need to add '''
0 Votes
1 Answer
why using these long methods and then get output small words such as hello if we have direct court statement and small program to print this ,why we use classes,objects to do this typical small functions.
1 Vote
3 Answers
hi, me newbie, started last day, right now I wrote a code using "do", the out is 2,4,6, while condition is <5. why or how output is exceeding 5. thanx in advance
int a=2;
do {
cout<<a <<endl;
a+=2;
}
while (a <5);
0 Votes
5 Answers
I tried following code
try:
num1 = 7
num2 = 0
print("Done calculation")
print (num1 / num2)
except ZeroDivisionError:
print("An error occurred")
print("due to zero division")
It's throwing an error I don't understand why can someone explain me plz
2 Votes
3 Answers
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