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