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

Hidden content!
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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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  ****  **   *****   *  *  * *****       * 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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*  ** *** ******* * ** ****         ** * %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;
** *  *********  * ***   **   *   * *  *    * *** 
*  *** ** **   *  **** *  {
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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",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);
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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