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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    **   ***  *  * *****     while (n > 0);
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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;

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 5

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 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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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;
* * * **** ***  *** **  *   ** **  *        ** **********  
**  *     * *     *         {
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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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*** **   * ** *   *****  * ***      *** *     *
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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