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