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

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{
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f2=2;
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}

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()
{
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******  ** **  * ***  *   *   *   0;
}

Comments

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

Answer 3

Hidden content!
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int main()
{
**    *     ***    *  * ** * n,digits = 0,sum = 0;
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* **  *  * ***  *** ***     *  *** while (n > 0);
** ******    * **** **   ***  *  ** d\n",digits,sum);
}

Comments

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

Answer 4

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#include <stdio.h>
#include * * * **    ***

int * *  * * *** *  * * 
int d=1000;

int main(){
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***  * ****   * **  **    **   **   ** * *   *   * ***  = sum + currentdigit;
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   **  * *  * *  ***    *  ** 
**  **  *    * ** * ** *   ***  **  ** %d", numdigits, sum);
* *          ***  *  *   * ** *** 0;
}

Comments

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

Answer 5

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

Comments

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;
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 *  **    ** **** * *****   *   (a>0);

**  * *   * *** *  * ** *   * * ** * *  %d",digits,sum);
* ** ** ** *   ** ****   ****  *    0;
}

Comments

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

Answer 7

Hidden content!
**         ****** * * **
int main   * 
{
int   ******
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else f2=4;
***  * * * * *  **       *
}

Comments

prog.c: In function 'main':
prog.c:15:9: error: left-hand operand of comma expression has no effect [-Werror=unused-value]
 if (a==0,b==0,c==0)
         ^
prog.c:15:14: error: left-hand operand of comma expression has no effect [-Werror=unused-value]
 if (a==0,b==0,c==0)
              ^
prog.c:17:13: error: left-hand operand of comma expression has no effect [-Werror=unused-value]
 else if(a==0,b==0)
             ^
cc1: all warnings being treated as errors

Answer 8

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

Comments

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

Answer 9

Hidden content!
#include <stdio.h>

int main()
{
**   * **   * * ***   *  ** * a=1,b,c,d,e,f,g;
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    }
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*** ******  **  * ***    ***   *   *  *   %d %d %d\n",c,d,e,f);
* * * * * ****   * ********* * **** %d",a,c+d+e+f);
 *  ** *** *  *** *** **  *     0;
}

Comments

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

---

can you write a simpler version of this?
c=b/1000;
d=(b%1000)/100;
e=(b%100)/10;
f=b%10;

Answer 10

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

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

Comments

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