10-26 Exercise 2: Displays the number of its digits and their sum

Question

Write a program that reads an integer (1-4 digits) and displays the number of its digits and their sum. For example, if the number is 1234, the program should display 4 and 10

寫一個輸入四位整數 輸出數字的位數和位數的總和。例如，數字是1234程式會輸出4和10。

More information about Loops here.

 

Example input:

1234

Example output:

4 10

 

Example input 2:

245

Example output:

3 11

 

Answer 1

Hidden content!
#include<stdio.h>

int main() {
**   * * * ***** ****   * a, a2, b1, b2, b3, b4, i, sum;
** ***  ** *  *      *****   **    *
* ** **  ** *** ** *  *****   * **  **   ** *  * *  *  &a);
     **  * *****   *****  ***** 
  * ****  * **   ** *     **   {
***     **  **  *   *     *  **  **** ***  * * **     ****  *
  ***  ** *        *  *** *** * * * *        **   ** * ** * break;
 *** *  *   *  **  ** * * *** ** * *   *     *  *  * ****
    }
 *    ***   * ***    **     *  ****** * ** *   ", i);

****  ****** ** *  *** * {
 *    *   ** *  * * *  *  *  *  *  * * *  * *  * **    
****  *        * ** ** ** ** * **  *** *******      **  **
*** *  * * *  *******   * *  ** * ***  ****  * *  * *****      ** * *  *   *
 * *    * *   ***  **   *    *   * **  ** **     * *   *******  *****  *   *   *  *
    }
 ** *   * ***   * **   * * if(i==3) {
* * * ***  *  * * ***  ***  *  ***    *  *   *   * **   ****
*  *   ** *    *  ** ** ** *  ** * * *  * ***** * **   * ****   *
*** *** *       **   *  ** *** * *       **  *          *  **  * * *   
    }
   * * *  **** *****       * if(i==2) {
***   * * ******* **  ***  * ****** **** *** *  *      ***    ***
* * ***** ** ** **  *   * * * ***    * *       ** * 
    }
* *    * ****    ****  *** ** ** *  if(i==1) {
* *  * ***** ** * **** *         * ***  ***   **** *  **** *
    }
***  ** *** *   *  *  *  * ** *   * *    *  
****   *    *  **  ** *  * *  *    **  * **    * %d %d %d", b4, b3, b2, b1);
 ** ** * ****** *   **   ***  ****   *  *** *   sum);
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

---

can you use loop to solve this question?

Answer 2

Hidden content!
#include <stdio.h>
int main()
{
 * * **   * *  **  ** *  * * * n,count = 0, sum=0;

   **** *  * ** *   * * ***  * ****   *** &n);
** *  **  * ** **  * ****     != 0)
*  ***  * ** * * *  *** 
  ** *  * *******   **   ****** *  **  * *   *  ** ***** * ****
 **    **** ****  **   *   *  *     **** ***** *   **    
* * **    *   ** **    ** ** *  ***       * ********** **
*  **  ** ****         * 

** * **  * ***  ** **  * ***   *****  %d", count, sum);

  * *** *  * ***  **   **     *  0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output

Answer 3

Hidden content!
 **    **  ** *  *  


   *  *** 

{
* **   b, c, d, e, f, g;
* *  * *     ****  ** 
*  *
****** ******
{
 **
   * 
}
 * * 
*  ***** *
 ** *  **  
*  
     ***  *  *   * * *   * ** **
     0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 4

Hidden content!
#include<stdio.h>

int main() {
    int a, a2, b[5], i, j, sum;
**  * **    * *  **** ** * ****  * *** **** ** * * ** &a);
* ****    * **** ***   **  *  * * 
 *   *  ** *   ***    **  ***  *** {
******  ** * *   *  * *    *** * * ** *   ** **     ****
 ****   *  *   ** **  * ***     *     * **  *    **   * *  break;
  * **** * * **** **   *   * * *    ****   * ******** *** *  *
    }
 ***** ***  *****  *  * *  *** *     *  ", i);

 *  ***  * ** ***    *   **   ***  *   {
   * * **  ** * *   ******  *   *  *** *  ** ** **** * *** **  * * * ** 
***  **     ******  *  *****  *   **** **  *** * ***  ** **   **** 
**   ***  * ***  ***     * **  * * *  ***  * * * ** *  *  **   *** *     *** **  
  ***  * ******* **  *  *** ******* **** **  *      *  ** *  ** *****  **    *
    }
  * * *  ** ** * ***      **  * if(i==3) {
* * * **** ** *  ***  * * ** **   **  *  * *** * *    **
*    * ******    **         **  *  * ****  * * *  *****   * *  * * 
***  *   *  *  * **  *    * *     *  **    * ** * *   * * ** *  * ***  * 
    }
* *   ** * ** *******  ** ** ** if(i==2) {
 ****   ** *** * * *  **  ** *    *** *** *        * *  *  
****    *** ** ***      **  *** *  *     * *  ** * *   *** *****
    }
** *****  *    * ** *  ****  * *  * * if(i==1) {
  **  *   ****    *  *     **   * *** *   *   **    **  *
    }
** ** ***   * ****   ** *  *  **** **   **   
**** *** * ***  ** ** **  * **   * ****  * *    sum);
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

prog.c: In function 'main':
prog.c:4:25: error: unused variable 'j' [-Werror=unused-variable]
     int a, a2, b[5], i, j, sum;
                         ^
cc1: all warnings being treated as errors

Answer 5

Hidden content!
#include<stdio.h>
int main()
{
* ***** ****    *  ****  ** n,digits = 0,sum = 0;
 **   * *  ** *** *  *   * ** ** **  *    *** ****  *  ** 
 ****  * *    *   **    *  * {
**   *** *   *  * * *  * *   *    *   ** **    * ** * ***  = n%10;
** *** *    ***  *   * **   * **  * *** **  ** ***  *  * = sum + digits;
*** * *  *  **  *      *  *******   * * *  * *  **  * *  *   *    *
* ********* *** *    * *******  ** *    ** * *
** *   ** ***  *  * *    *   while (n > 0);
***  *  *****  *   ***    **** *** *  * * *    *****  
**         *   ** * *   **  * *  ** **   *  d\n",sum);
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 6

Hidden content!
#include <stdio.h>
int main(void)
{
    * *    * * **  * *  * * **** a,digits=0,sum=0;
****    *   ** ***  *      ***   **   ***    ** ***** * * **
 * *     ***  ***   ***  *     {
 ** * *  *   *  ** * * ******       * ** *  **  ** **   *  * **
 *     **    * *  *  * * * *   * ****  ***    *** ***  **** * *  
  *   * ***      ** ** *  ** **** ***  **** * ***  *   *** *
* ****   * **   *  *       *   
* *****  *    *  ** * **   *  **** (a>0);

*  * **  * ***** ** * ***** **   * * *  *     %d",digits,sum);



 *  *   ** *    ****** *   ***  *** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 7

Hidden content!
      * * *****   *  *  * *

int  *  *
{
 **  *  * **  *   ** * *  *   * ** **  * 
 *    **  ****   ** ***** * ****  = 0;
       *  ** ** ** **  *   
   * *  *     * * ****  **   *  * * * ** *   *  
sum *  ** * 0;
do 
{sum += n % 10;   *    
n /= 10;
*  *  * *
} 
  *** ***
** (n  *     0);
{
 **   **  ** *  *   ***     ** * **
}
 * **    ** ** * ** ***  *   (0);
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 8

Hidden content!
#include <stdio.h>

int main()
{
    ** *****    *  * *  * *  * ****   num,digits,sum=0;
  ** * * *    ***** *  *     **   **** * * * **** ** **  
 **  *** ** *   *   * *    *** *  * ** * *** ** ** *   *   **  *  ******   **  &num);
*   ***   *****          * *******  ***
    {
*   ** ***  ** * **** ***    * ****        *** *  ********** * ** ****   *  *   += num % 10;
*    *** *****     *   **    ********   *  ** *  *   *  ** ** ***    ** = num / 10;
 *  * * * * ** **  *  *   **  **    ***    *  ***** ************    
** **** * *  *  **** **

    ** ** * **  **** **    ****** *      * * %d", digits,sum);

 * **  *  **** *******  ** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Correct output
Case 3: Correct output

Answer 9

Hidden content!
#include *  **** *  *  *  *

int main()
{
   **    * * **   *  *  *****   n,count = 0, sum=0;

* * *** ****  *** **** * *  *  *  *  ***   &n);
  ***    ** *  ** *   *    * ***** != 0)
  * **  *     **  ** **  * * **
* ******  * ***  * *******   ***** *          * * ** *
  * **   *** * * *****   *    *      **          *  ****  += n%10;
**     **  ***   *     * * * ** * **** * ****      * ***  /= 10;

  **       *  *   **  **   * *

 **  ****  *  *      *     ***    * **   %d", count, sum);

**   **** **   ****  * ** **  * 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 10

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
*  ******* *    *   ****** * a,b,i,max;
* * **  * *   *  * ** * **   *   ** *** %d",&a,&b);
  **  *       **** **** ** *  * * **   ***   **   *  * * * 
          **  ** *  ** * 
  **  * *  ****   *    ** ***    **    ** *    ** *  *   ** *    ****   ****
  * *  *   ****** * **** *  *   * ****   ***   ***    *   
**   * **  ***   ***    ** *  
**  **  ****  * * *    ***    *  *  ** * *     ** *
* * *     *     *  ****** ****** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

---

-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output