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

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()
{
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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>
#include  * * *  ** *** 

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

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 *   * ***  * *** ** * **     ***  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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}

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

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int main   * 
{
int   *  *       
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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()
{
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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",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