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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}

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>
#include   *   ***    *

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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}

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()
{
  ** *   **  **  *  *   ** a=1,b,c,d,e,f,g;
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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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    }
* **     *   * *    * * *** **      *   %d", digits,sum);

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

Comments

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