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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.

(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

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.

#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 | 253 views

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`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)
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Case 0: Wrong output
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Case 3: Wrong output
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`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
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Case 3: Wrong output
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`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)
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Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
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`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);
^~~~~~
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`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);
^~~~~~
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`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);
^
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`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);
^~~~~~
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`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);
^~~~~~
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`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
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`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);
^