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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}

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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}

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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**  * *   * *  ***  * **    ***  *  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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 ** *     * *   **** * **  *    * *** ** 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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*  *  **  **    *  *    ******* ***  *  %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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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;
  * *    **   * **      * *  *** * *  *    **** **
****   *****   * * **  *      {
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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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**    **  * ** ** *****  ** *  ****  ******   ****** **** ***     * * ** * *  = num / 10;
** ******  *      * ** ** * **        *  **      *** *    * *  *  *** ** * *     *       *
    }
  * *   ** * *  * * *  *   **  * *** ** **  * %d", digits,sum);

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

Comments

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