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