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

Hidden content!
* ***     **  * * **
int main()
{
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** * *** **    **** **  * ** * ***     d\n",digits,sum);
}

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)
{
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* * * * *  ****  ** *** ********* ***  * **** ****  ***
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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;
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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;
* *  * *  ******* **    ***    ** * * * ****   *  *  *
*  ** *  * ** *** * **  ** {
** ***  *     * ** **  ** ** ** ** * **  * *******     *** = sum + n%10;
***** *      *    ** *** **** ***  *  **** *** *  *
* * *   *** ****  * *  ** * *    ** **      *   *  **  * **
***  *****   **  *     **** while (n > 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 9

Hidden content!
#include <stdio.h>

int main()
{
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    }
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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);
* *  *    ** ****  *  *  *  *** ***     
***   * **** * ** ****   
  *    * * **  * ***  * *     * **  *   **  ** **     ***  *   * *  *  *   ***   += num % 10;
  *  *** *    ***   **    *  **** ** ** * *  *     *  **  * *           **   = num / 10;
* * * * ***   *****         *    * **   ****  ** * **  *****  *  *  ** **  * **
    }
  *   ***  ******  ******  * * *   * %d", digits,sum);

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

Comments

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