0 like 0 dislike
3.9k views

The 13-digit International Standard Book Number (ISBN) is a unique code that identifies a book commercially. The last digit is a check digit used for error detection. To calculate its value, each digit of the first twelve digits is alternately multiplied, from left to right, by 1 or 3. The products are summed up and divided by 10. The check digit is the remainder of the division subtracted from 10. If it is 10, it becomes 0. 

ISBN檢查號的計算方法: 前12個數字,奇數項 乘以 1 , 偶數項乘以 3

For example, assume that the first twelve digits are 978960931961.  

假設號碼前12位是978960931961

(a) (9*1 + 7*3 + 8*1 + 9*3 + 6*1 + 0*3 + 9*1 + 3*3 + 1*1 + 9*3 + 6*1 + 1*3) = 126 

(b) The check digit = 10 – (126 % 10) = 10 – 6 = 4  

檢查號 = 10 - 餘數 = 10 – (126 % 10) = 10 – 6 = 4  

So the valid ISBN is: 9789609319614

Write a program that reads a 13-digit ISBN and checks the last digit to see if it is valid or not. 

寫一個輸入13位ISBN號碼 判斷最後一個數字是否檢查碼即可

#Try 1:

Input:

9789609319614

Output: 

Valid ISBN

 

#Try 2:

Input:

9781482214505

Output: 

Valid ISBN

 

#Try 3:

Input:

9780132936493

Output: 

Invalid ISBN

 

[Exam] asked in Midterm by (12.1k points)
ID: 36751 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 3.9k views

26 Answers

0 like 0 dislike
Hidden content!
#include<stdio.h>

int main(){
    char isbn[12];
    int a,b,c,d,e,f,g,i=0,j;
* **** * *** ****** ** * ** ***** * ***** *****
* * ******* * *** * *** * **
* * * ** ** * ********* * **** * * * ** *** **
* ******* ** * *** * *** * * ***
* * * * * * * * * * ****** ** ** ** ** ** * * * ***
** * ** ***** * * * * *
* * **** ** * * *** ****
* ** * * ***** ** * * ****
* ********** ** ** *** * ***
*** * **** * * * * ****
* * * **** * *** * * * * ***** * ** * * ** * * * * * ISBN");
* * * *** ** * ********* *
* *** * * * *** **** ** *** ** ** *** ** ** * ******** * * ISBN");

}
answered by (-32 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
0 like 0 dislike
Hidden content!
#include<stdio.h>

int main(){
    char isbn[12];
    int a,b,c,d,e,f,g,i=0,j;
***** * * ** * * * * ** *** * * ** ******
* **** *** * * * *** ** ** ** * * * *
* * **** * ******* ** **** * * *
* * * * * * * * * ***** ** * * *****
** * **** ** ** ** * * ** ** ** ** * ** * *** ** *
* *** * * * *** * ****
** * ** ** ** *** * * * *
*** * * *** * * ****** ****
* * * * * **
* * ** * ** * *** *
** * **** ** * ****** ** *** *** * ** * * ISBN");
* * * * * **** * ** ** * **
** * * * * * * ** ** **** *** * ** **** * * * ISBN");

}
answered by (-32 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
0 like 0 dislike
Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
    ///long long int n = 978960931962;

    long long int n;// = 9789609319614;
    int lastDigit;
    int temp1;
    int sum=0;
    int check=0;

* * ** * **** ** * ** * * * * *** ** * **

** * * * ****** * * ****** * **** **** *** * = n%10;
** * *** ** ***** * ** * * ** ** ******* ** ** * = n/10;

**** * * * *** * *** **** * ** * = n%10;
* *** **** *** * * ****** * * ****** * * * ** = temp1*3;
* ** ** ** *** *** **** *** ** ** * * = sum + temp1;
* * * *** * * * ** *** ** * ****** * **** * ** *** * * ", temp1);
* * * ** ** ****** * ** **** * * ** * = n/10;


*** ***** * * ** * * * * ** * ** ** ** *** ***** = n%10;
*** * **** **** *** * * * ** * * * * ** * * = temp1*1;
*** *** ** * ***** ** * * * * * * * *** ** * * = sum + temp1;
** *** ****** ***** ** ** * ** ** ** * *** * *** ** * *** * * ** ", temp1);
** * *** * **** ** **** * *** * ** * = n/10;

* *** **** ** ** *** * ** *** ****** *** = n%10;
*** * * ** ******* ** * *** * * * *** * = temp1*3;
** * *** * *** ***** * ** * ** * * * = sum + temp1;
* *** * ** *** *** ** * * * * * ****** * * ** *** *** *** ", temp1);
** ** *** * * ** * * * * ** *** * ******* = n/10;

** ** **** * **** * * *** ** **** * *** * = n%10;
* ***** * ** * * *** * * * *** ***** *** * * = temp1*1;
*** * *** * ** * * *** ***** * * * ****** = sum + temp1;
** * ** ** **** ** * * ** * * ** * ** **** ***** * * ** * ** ", temp1);
* ** * * * **** ** ** ** ** = n/10;

* * * ** *** *** * * ** **** * * *** **** ** = n%10;
* ****** **** ** *** * ** * * *** * * * ** ** ** ** = temp1*3;
* ***** * * * ** ** ** **** * * ** ** * ** = sum + temp1;
* *** * ** *** ** ** *** ** ** ** * ** * ** **** * * * ", temp1);
** ** * ** * * *** ** ** ** * * ** * * * = n/10;

** ** * * * *** * * ** * ** ***** * * ** * * **** ** = n%10;
* * ** ****** ** * ** * ** ** ** *** * ** = temp1*1;
** ** * ** ** * ** * * ** * * *** = sum + temp1;
** *** * *** * *** * ** * *** * *** ****** * ***** ", temp1);
* * ***** ***** *** * *** * ** * ** = n/10;

** ** *** **** * ** * * * ** ** ******* ** ** * ** = n%10;
** *** * * * **** ** * ** ******* * * = temp1*3;
***** * * * * * ** *** **** * ** ** * ** **** = sum + temp1;
* *** ** * * * * * * ** * * *** * **** **** ** ** **** * * ", temp1);
******** **** ** **** * *** ** ** *** = n/10;

* * *** * *** ***** * * * * ** * * * * * * * = n%10;
* ** ***** ** * ** * * * * **** * * * **** * = temp1*1;
* * ***** *** ** * * **** ** ** *** * = sum + temp1;
* * * * * ** * *** * * * * ** ***** *** *** * ", temp1);
* * * ** * * * ** *** *** * *** *** * = n/10;

* ** ** ** * * * * *** *** ** * * * * * * * = n%10;
** * * * * ********** ** * ** * **** * = temp1*3;
* ** ***** * * * * * * ** * ***** ** ** * = sum + temp1;
* * ** * * * ** * ** * *** ** **** * * **** *** * * *** * ", temp1);
**** **** *** *** * * ** * * * * * * * *** * * = n/10;

* ** * * * * **** * ** **** * * *** ** *** * * = n%10;
** ** * ***** * ** * * **** * * * ** *** * **** ** = temp1*1;
** **** * ** * *** ** * * *** * ** * * ** ** = sum + temp1;
*** * * ** ** * * * * * ** * **** * * * ", temp1);
**** **** ** * *** *** ** * ** ** ** * * = n/10;

* * * * * * * ** * * * ** * * * **** * = n%10;
**** ** ** * ** * * **** * *** *** *** ******* = temp1*3;
***** ** * * ** *** * ** ** * * *** * * *** ** ** = sum + temp1;
***** *** ***** ** ***** * ****** * * ** **** *** * ** * * ** ", temp1);
* * * * * * * *** * * * * ** ** * ** * = n/10;

* * ** * * ** * ** ** **** * * ** ** **** * ** = n%10;
***** ** * **** ** ** *** ***** ** * ** * ** ***** = temp1*1;
*** *** * *** * * * ** * * * ****** * = sum + temp1;
***** * * ** * **** *** * * ** ******** **** * ", temp1);

* ** * * ** * * * ***** ** ** * * ** * ** ********* * * ",sum);
** ** * ** **** * ** * * * *** * = 10 - (sum%10);


* * ** ** *** * * * *** * * ** ** * * * * == check)
* * * ** ** * * * ** ** * * ** ** ** * * * ** ** ** *** ** * *** * ISBN\n");
* ** *** *** * * ** ** *** * * **** * ***********
** * ***** ** ** ** * * * * * **** * ** * * ** * ** *** ** ** ** * ** ISBN\n");

    return 0;
}
90/100 answered by (-74 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
0 like 0 dislike
Hidden content!
#include * ** **** * *


int main (void)
{

int ******** *** *** **** *** * * ** * * ** * *

* * ** *** * ** *** * *** * * ******** * * ** * * *** *** * *** ******* *** * ** * * *** *** * * * * * * * ***



total= ** ***** ** *********** ** * ** **** ** * * * *** * *

check_digit= (10-(total%10));

 if (check_digit!=num13)
** * ** *** ** * ***** *

***** *** * *** * ** * ** ***** ISBN");

*** **** ** ** ** ** *

* ** * * * * ** ***** if * * * * * *
* **** * * * **** * * * *** ** **** * * **


* ** **** *** ** ** ** * ** ** *** ** *** * **** ISBN");

}

return 0;
}
answered by (-107 points)
0 0
prog.c: In function 'main':
prog.c:9:7: warning: too many arguments for format [-Wformat-extra-args]
 scanf("%13d",&num1,&num2,&num3,&num4,&num5,&num6,&num7,&num8,&num9,&num10,&num11,&num12,&num13);
       ^~~~~~
0 like 0 dislike
Hidden content!
#include **** ***** * *


int main (void)
{

int * * * ** ** * * ** * ** ** * * * ** ***

*** ** ***** ****** * ** ** * * * * ** *** ** * **** *** *** * ** * * ** ** ** ** ** * * ** * ***** **** * ***



total= ** *** * *** **** ** ** * * * ** * * * * * * *** ** ** ****** **

check_digit= (10-(total%10));

 if *** * **
* ** * ** *** ** **

* **** * ** ** ISBN");

}

*** * * * ** ** * * * if * * * * *
** * * * * * ** ** * * * **** ** *


*** * ** ** *** ***** * * ** ** * * ** * * ** *** * * ****** ISBN");

}

return 0;
}
answered by (-107 points)
0 0
prog.c: In function 'main':
prog.c:9:7: warning: too many arguments for format [-Wformat-extra-args]
 scanf("%13d",&num1,&num2,&num3,&num4,&num5,&num6,&num7,&num8,&num9,&num10,&num11,&num12,&num13);
       ^~~~~~
0 like 0 dislike
Hidden content!
#include<stdio.h>
int main()
{
** * *** * * * ** * * a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, sum1,sum2, sum3, check;
* * * * ** * * ** * * * * ** *** * * ***** ** *** * **** * ** *** *** * * * * * * * * * ***** * * * *** * **** *** * * *** ** ** ** ** ** **** **

** * ** * * * ** **** * *** ****
***** ** **** * ** * *** ** ** * * *

* * ** * ** ** * ** sum1+sum2;

* * ***** * ** ** ** ** 10 - (sum3%10);

** * ** *** * ** ** ** ***** * *
** * ** *
** * * ******* ** ***** * * *** **** * * * * ** ISBN");
* ** * *** ** **** *
** ** ** * * ****
** * * * **** *** **
* * * * * * ***** * ** * **** *** ** * **** ** ** * * IBSN");
** ***** * **** * * * * * *
*** * ** ** * * **** *** * 0;
}
answered by (-233 points)
0 0
prog.c: In function 'main':
prog.c:5:14: warning: format '%ld' expects argument of type 'long int *', but argument 2 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
              ^
prog.c:5:17: warning: format '%ld' expects argument of type 'long int *', but argument 3 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                 ^
prog.c:5:20: warning: format '%ld' expects argument of type 'long int *', but argument 4 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                    ^
prog.c:5:23: warning: format '%ld' expects argument of type 'long int *', but argument 5 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                       ^
prog.c:5:26: warning: format '%ld' expects argument of type 'long int *', but argument 6 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                          ^
prog.c:5:29: warning: format '%ld' expects argument of type 'long int *', but argument 7 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                             ^
prog.c:5:32: warning: format '%ld' expects argument of type 'long int *', but argument 8 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                                ^
prog.c:5:35: warning: format '%ld' expects argument of type 'long int *', but argument 9 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                                   ^
prog.c:5:38: warning: format '%ld' expects argument of type 'long int *', but argument 10 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                                      ^
prog.c:5:41: warning: format '%ld' expects argument of type 'long int *', but argument 11 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                                         ^
prog.c:5:44: warning: format '%ld' expects argument of type 'long int *', but argument 12 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                                            ^
prog.c:5:47: warning: format '%ld' expects argument of type 'long int *', but argument 13 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                                               ^
prog.c:5:50: warning: format '%ld' expects argument of type 'long int *', but argument 14 has type 'int *' [-Wformat=]
     scanf("%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld%ld", &a1,&a2,&a3,&a4,&a5,&a6,&a7,&a8,&a9,&a10,&a11,&a12,&a13);
                                                  ^
0 like 0 dislike
Hidden content!
#include ** * * ***


int main (void)
{

int *** * **** * * ** * **** ** *

* **** * * **** **** * * * * **** * * * ** ***** *** * *** * **** * **** * * *** *** *** ** * * *** * * **** ** * ** * * * **



total= **** * ** *** * * ***** ** * ******* * ** * ** ********* *** ** ****** ***
check_digit= 10-(total%10);

 if ** ** *
** * * ** * ** * **

* * * * * * ** ** ** *
}

 else if * ******* *
* * *** * *** * * **

**** ** * * ** * ** * * ** * * *** ** * * * **** ***

 }

return 0;
}
answered by (-107 points)
0 0
prog.c: In function 'main':
prog.c:9:7: warning: too many arguments for format [-Wformat-extra-args]
 scanf("%13d",&num1,&num2,&num3,&num4,&num5,&num6,&num7,&num8,&num9,&num10,&num11,&num12,&num13);
       ^~~~~~
0 like 0 dislike
Hidden content!
#include *** ******


int main (void){

int ** ** ** ** ***** *** * * * ** * * **

* ******* * ** *** ** ** * * ** **** ***** * * * * ** * **



total= **** *** * * ************ * * ** * * *** ** * * * ** ***
check_digit= 10-(total%10);

 if * **** *
**** ** ** * * **** ** *


* * * **** * * ** * * * * ** **** *** * *
}
 
** **** if *** * * **
* ** * ** ** *******

* **** *** * **** ** * * * ***** * * * * ** * * * *** * * * **

 }

return 0;
}
answered by (-107 points)
0 0
prog.c: In function 'main':
prog.c:8:11: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
 scanf("%13d",num1,num2,num3,num4,num5,num6,num7,num8,num9,num10,num11,num12,num13);
           ^
prog.c:8:7: warning: too many arguments for format [-Wformat-extra-args]
 scanf("%13d",num1,num2,num3,num4,num5,num6,num7,num8,num9,num10,num11,num12,num13);
       ^~~~~~
0 like 0 dislike
Hidden content!
#include<stdio.h>
int main(void)
{
* **** * * * * * * a,b,c,d,e,f,g,h,i,j,k,l,m;
* ** * ** * ***** ***** * * ******* * * * *** * *** ** *** *** * * ******* *** *** **** ** * * * ** ** ** * *** ** ****

* * * * ** * ** *** * * check,sum;
** ****** * *** *** * ***** * * ***
* * ** * * * * * ** ** * * * * * ******
** * * ** * ** *** * *

* ** * * * *** * *
** * **** * * *** * *******
* * *** *** * * **** * * ** * * * ** *
** * * ***** *** ** * *

    



**** * * *** * * *** * * ** * != m)
* * * ******* * ** **
* **** * ** * * **** *** ***** * ** ** * ** * * ISBN");
* * *** * ** * *
* * **** * * * ** **
**** ** **** * **** ***
* * * *** *** * ** ***** * ** *** *** ISBN");
    }

return 0;
}
answered by (-249 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
#include ** ***
int main (){
int **** *** * ** *** *
int ** * *
** * * * number 13: ");
**** * ** * ** ** ** ** * * ** * * * *** ****** *
**** * * ****** *
* * ** * * ** * * ***** * **
***** *
***** ** *
* * * ***
* * * ** * *** * *
}else {
* * * * **** **** *** **
}

return 0;
}
answered by (16 points)
0 0
prog.c: In function 'main':
prog.c:6:9: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
         ^
prog.c:6:11: warning: format '%d' expects argument of type 'int *', but argument 3 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
           ^
prog.c:6:13: warning: format '%d' expects argument of type 'int *', but argument 4 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
             ^
prog.c:6:15: warning: format '%d' expects argument of type 'int *', but argument 5 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
               ^
prog.c:6:17: warning: format '%d' expects argument of type 'int *', but argument 6 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
                 ^
prog.c:6:19: warning: format '%d' expects argument of type 'int *', but argument 7 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
                   ^
prog.c:6:21: warning: format '%d' expects argument of type 'int *', but argument 8 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
                     ^
prog.c:6:23: warning: format '%d' expects argument of type 'int *', but argument 9 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
                       ^
prog.c:6:25: warning: format '%d' expects argument of type 'int *', but argument 10 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
                         ^
prog.c:6:27: warning: format '%d' expects argument of type 'int *', but argument 11 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
                           ^
prog.c:6:29: warning: format '%d' expects argument of type 'int *', but argument 12 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
                             ^
prog.c:6:31: warning: format '%d' expects argument of type 'int *', but argument 13 has type 'int' [-Wformat=]
 scanf("%d%d%d%d%d%d%d%d%d%d%d%d",i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12);
                               ^
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.70.178.240
©2016-2025

Related questions

1 like 1 dislike
49 answers
[Exam] asked Nov 15, 2017 in Midterm by thopd (12.1k points)
ID: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 5.9k views
2 like 0 dislike
77 answers
[Exercise] Coding (C) - asked Oct 19, 2017 in Chapter 5: Selection Statements by thopd (12.1k points)
ID: 27667 - Available when: Unlimited - Due to: Unlimited
| 10.1k views
0 like 0 dislike
15 answers
[Exam] asked Dec 9, 2017 in Midterm by thopd (12.1k points)
ID: 36755 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 2.8k views
12,783 questions
183,442 answers
172,219 comments
4,824 users