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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}

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

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#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

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int main()
{
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}

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

int main(){
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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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**  ** *   **   ***   while (n > 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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* **  **   *  ** ** *      *
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   ** ***      *    * * * ** ** * * *  *  %d",digits,sum);
* **   ** *  **  ** *  * * *    * 0;
}

Comments

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

Answer 7

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int main  *   
{
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else f2=4;
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}

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;
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   *  *  ** **** * * **  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()
{
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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;
         * * **  ** ***      **  * * *  ******    *  ** ***    *  *  
 ***  ** *** * * *  **  ** **     **** *   ****  *        *     **    ** *    *   &num);
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***      *** *****    ** ****      * * *** * * *******  ** *    ** ** ** *****  ** * 
    }
* ***  * *  **  *  *     *       * *  * %d", digits,sum);

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

Comments

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