Вы попали на английскую версию сайта. Большая часть курсов доступна на русском языке


Тимур А 13 January 2017 →

my code is:

var i = 2; while (num%i > 0) { i++; } return i;

and OUTPUT says Run failed! Check and fix errors above!. Sad =(

Арман Кобжасаров 08 January 2017 →

Hey Rakhim. Your english lessons are awesome. Keep it up! I'd like to point to one thing: when you say the word like "-number" it is correct to say "negative number" instead of "minus number", isn't it?)

Andrew Titov 28 December 2016 →

enter image description here

"Отмена" -> "Cancel", is not it ?!

Askhat Abishev 22 December 2016 →

Hi, Rakhim! How are you? I'm Askhat. Don't know if you remember me... We studied in SDU. I've found a mistake in "IF conditions and programs making decisions" part... OR operator (A - FALSE, B - FALSE, A OR B - TRUE). And also in AND operator, A - FALSE, B - FALSE, A AND B - FALSE (not a mistake, but I think that your intention was to write A - FALSE, B - TRUE, A AND B - FALSE). Wish you success in your endeavor. Great job!

Andrew Titov 16 December 2016 →

Execution is counted, but the test gives a message.

// BEGIN (write your solution here)

int main(void) {
    int lower, upper, step, celsium, kelvin;
    lower = 0;
    upper = 300;
    step = 20;

    celsium = lower;

    while(celsium <= upper) {
        kelvin = celsium + 273;
        printf("%d : %d\n", celsium, kelvin);

        celsium = celsium + step;
return 0;


// END
make: Entering directory `/usr/src/app'
rm -f solution
gcc -g -Wall solution.c -o solution
solution.c: In function ‘main’:
solution.c:13:9: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration]
         printf("%d : %d\n", celsium, kelvin);
solution.c:13:9: warning: incompatible implicit declaration of built-in function ‘printf’ [enabled by default]
make: Leaving directory `/usr/src/app'

Николай Артамонов 12 December 2016 →

Hi! I have a problem, I write my command in terminal and receive file containing answer 8, but check solution show mistake - fatal: [localhost]: FAILED! => {"changed": false, "failed": true, "msg": "Expected 8, but was ''"}.

Whats wrong?

Ihor Kravchuk 10 December 2016 →

There is russian sentence in "the problem" section. In all english courses in modals that appear after accomplishing the quizzes title is "Title" and text in body is "Body".

Игорь Б. 08 December 2016 →

Hello! Subtitles can be seen on a light background!