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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*  * *** *   * ****     *   *  * 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>
#include ***  **  ***   

int ** *   *    * * *** * *    
int d=1000;

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  ***   *** * *  *   * **  ** **     **   ** %d", numdigits, sum);
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}

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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{
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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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***** *  * *   *   *   *  ** ***** * *  **   * *   *  **     * 
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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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    }
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**   ** **      **   *      * **  * *   * %d %d %d\n",c,d,e,f);
  ****       * ** * **** *** *  *   **** %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