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