1 like 1 dislike
8.3k 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: 32706 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 8.3k views

49 Answers

0 like 0 dislike
Hidden content!
#include * * * *** **
#include *** * *** *

int main()
{
***** * **** ** * * * * * * ** * * ** ***
** ***** * * *** * *** * **** *** * * ** ** *** * * **** ** ** * * * ** * *** * **** * **** ** * * **** * * * ** * * *
* **** * ** ** * * * + b*3 + c*1 + d*3 + e*1 + f*3 + g*1 + h*3 + i*1 + j*3 + k*1 + l*3;
* ** * * *** * **** **** *** **
* ** ** ** * * * *** ** * (ans==m)
*** * ** * * * *** * * * ** * ISBN");
** * ***** * ** * *** * * *
** * * * * * ** * * *** * * * * ** * * ISBN");
* **** ** ** ***** *** * * 0;
}
answered by (-258 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()
{
* *** * * ** * whole;

* *** * **** ** * * * * * * * * * * * *** *
* ** * * ** * * * * * * ****** ** ** *** * **** **** ** * * ** ******** * **** ** * &n6, &n7, &n8, &n9, &n10, ** * * ** * *** ** &n13);



whole = **** * * * ** ***** **** * * ****** * ** * **

int temp = whole%10;


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

** * * * * *** *** ** 0;
}
answered by (323 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()
{
* * * **** **** * * whole=0;

* * * *** * * * ** * * * ** * * * ** * **
** * ******** * * **** ** * * ** ** * ** * **** * ** *** *** ***** * **** **** * &n6, &n7, &n8, &n9, &n10, * * ** * * &n13);



whole = *** ** * * ******** ***** * * ****** ** ** * *** *



if ((10-(whole%10))==n13)
* ** * * * *
** * * ** * * * * **** **** * ******* * * * ** *** ***** ISBN");
* * ** * * ****** *
*** **** * *** * * ** * * *
** ** * * * ** ****
* ***** *** * ** * * * * ** * * ******** * * * ******* ISBN");
**** * ** * ***** * **** ***

** * * *** *** ** * ** 0;
}
answered by (323 points)
0 0
prog.c: In function 'main':
prog.c:8:11: warning: too many arguments for format [-Wformat-extra-args]
     scanf("%1d1d1d1d1d1d1d1d1d1d1d1d1d", &n1,&n2,&n3,&n4,&n5, &n6, &n7, &n8, &n9, &n10, &n11,&n12, &n13);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0 like 0 dislike
Hidden content!
****** * * ****
main()
{
long int * **** * * * ** ** *
*** ** ******* input ** * *
** * ** * *** * *** *
if * * ****** **
** * * **** * ** * * * * * * * *
if *** *** * ***
************ ** ******* * * ******* ** ****

***** * * **
** * * ****** **** *** **
*** * * *
*** ****** ****
** ** *** ** *
** ****** * ***
** * * * * *
***** ** *** ***
** * ** ***
****** **
* * ** *
m==a%100/10;//2
n==a%10;//1

** ** *** * * *
o==10-(sum%10);

if (n = o)
{
* * **** ** *** ** ** * * ** *** ISBN");
}
if (n != o)
{
* ** **** ** * ** ***** ** * * * ** * ISBN");
}
return 0;
}
answered by (-32 points)
0 0
prog.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^~~~
0 like 0 dislike
Hidden content!
#include * * * *

int main(){
* * ** * ** long long int n;
**   int temp=0;
***   int n1=0,n2=0;
*** ** * * int value[13];
***   int i,j;
** **   int check;
****   int value2;

* **   **** *** ** * * ****** *

*** * * * for(i = 0; i < 13; i++){
*** * * ** * * * * ** * * * *** ** * = n%10;
***** **** ** ** * * ** * ** ** * ** ** * = temp*3;
***** *** ** *** *** * *** * * ** ** * * **

** *** *** * * * ***** *** * * ********* ** * = n%10;
* * ** *** * **** ** *** * * * * * * ** * ** * = temp;
******* ** * * * ** ** * * * *** * ** *****
* * * ** ** * * **** ** * * * * ** * ****** = * *** *
********* ***** * ***** * ** * *** *** *** * **** * *** **
* * **   }
* * * ** * *** *** * * ** * ** * * * value2);

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

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


** *   return 0;
}
30/100 answered
0 0
prog.c: In function 'main':
prog.c:12:10: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
  scanf("%d", &n);
          ^
0 like 0 dislike
Hidden content!
#include ** * * *** * * *
int main ()
{
** ** * * * a;
* *** * * * ** ** **** * * *
**** * * * * ** ** *** * ** * * *
* *** *** ** * 0;
}
answered
0 0
prog.c: In function 'main':
prog.c:5:10: warning: too many arguments for format [-Wformat-extra-args]
    scanf("number",&a);
          ^~~~~~~~
prog.c:6:11: warning: too many arguments for format [-Wformat-extra-args]
    printf("Valid ISBM",a);
           ^~~~~~~~~~~~
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;
}
20/100 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 <stdio.h>
#include <stdlib.h>

int main()
{

* **** ****** * ** ** ** isbn;
* * * **** *** * * s1;
*** ** ******* ** * * s2;
* ** ** ****** * * ** * ** ** * s3;
** ***** ** *** * s4;
* * * * * * * * *** s5;
* * * ** *** *** ***** * ** ** s6;
* * *** *** * * ** * s7;
* ** *** * *** ***** * s8;
* * **** ***** * ***** ** s9;
**** ** ****** * s10;
* * * * * ** * * * ******* * * * s11;
** * ****** * *** ** *** *** * ** s12;
* * ** * ** *** **** * ** s13;
    int check;
* ***** * ** * ** ** * **** ** sum;

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

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

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

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

** * * * * * ** ** * == s13)
    {
* *** * * * * * ** * ***** ** * ***** ** * * *** * *** *** ISBN");
    }

* *** *** ** *** * *
    {
***** * *** ***** *** * ***** ** * * ** ** ISBN");
    }

* * * * * * ** ** ** * * * * * ******* 0;
    }
answered by (-193 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Correct output
0 like 0 dislike
Hidden content!
    #include <stdio.h>
#include <conio.h>

int main()
{

* * * * **** ***** * ** * isbn;
* ** * ******** **** * s1;
* *** * * *** *** s2;
* ******* ** ***** *** ** s3;
**** ** ***** * * **** * s4;
**** ** *** ** * * * ** * ** s5;
* * ** * ** *** * * * s6;
* * * * *** * ** ** * s7;
**** ***** ** * * * s8;
** * ** **** * ***** s9;
*** **** * ** *** * *** ** * s10;
* ** ***** *** ** s11;
** * **** * * * s12;
*** ** * * * **** ** * * ** **** s13;
* * * * * * ** * * check;
    int sum;

* * * *** **** ****** ** ** *** ** * &isbn);

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

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

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

* * * * *** * * == s13)
    {
* ***** * *** ** * **** ****** * ** ** * * * * * ISBN");
    }

* * * *** * ** * * ***
    {
*** * ***** ** * * * **** ** ***** * ** * ** ISBN");
    }

* ** * * * * ** ******* *** * * * * * ** * 0;
    }
answered by (-193 points)
0 0
prog.c:2:19: fatal error: conio.h: No such file or directory
 #include <conio.h>
                   ^
compilation terminated.
0 like 0 dislike
Hidden content!
#include<stdio.h>
int main(void)
{
    int n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13,sum,check;
* **** ** * * ******* **** * ** *** **** * *** * **** * **** ***** ***** * ******* ** * *** * ****** *** * ** ** ** * * * ** ***** * ***** *

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

** ** * **** **** * * * * **
    {
*** *** * *** * ** * ** * ** ** * * * *
    }

** * *** * ** *** * ** ** ** * * ** **** * * *
** *** ** ***** ** ******** ** **** * *
** * ** * *** ** *** * ** * * ** * **** ** *** *** ** *** * * ** * ISBN");
*** * *** ** * * * **** **** * * * * * ** **
***** *** * **** ** ** *** * ** * *** *** *
*** *** *** ** ****** ** ** ** *
* ** *** *** ** ** ** * * ***** ** * * * *** * ** *** * * * ** **** * * ISBN");
* * * * * * * * * *** *** * ** * * ** *** **
return 0;

}
answered by (-249 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Correct output
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.70.127.115
©2016-2025

Related questions

0 like 0 dislike
26 answers
[Exam] asked Dec 9, 2017 in Midterm by thopd (12.1k points)
ID: 36751 - Available when: 2017-11-15 14:10 - Due to: Unlimited
| 5.3k 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
| 13.6k views
12,783 questions
183,442 answers
172,219 comments
4,824 users