0 like 0 dislike
6.2k 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
| 6.2k 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:172.70.131.189
©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
| 9.6k 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
| 15.3k 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
| 4.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users