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()
{
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****  ** *   ***   ***   ***      *    *  *  *    
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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

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{
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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;
 *  *    * *         *    *** *    *****    *****
  ****   **  *  *  * **   {
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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;
* **  ****  * ***  * ****   ******  ** ***  * *   * ** **  *
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   *  **   *  *   **      *    * *     ** * *  * *  *    **** *******   ** += num % 10;
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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