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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else f2=4;
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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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}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output

Answer 4

Hidden content!
#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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 * **  ****   **** *   ***  * (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 * **
{
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else f2=4;
****  **     * **  * ** ***
}

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;
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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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 *** * * *    *** ** ***   * ****   ** *** %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