0 like 0 dislike
6k 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
| 6k 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:172.71.194.143
©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
| 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
| 14.8k 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
| 4.3k views
12,783 questions
183,442 answers
172,219 comments
4,824 users