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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 *   *** * **  **  ****      **   ** 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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 ***   ** *  *  ** *  * *** *  *  *  *   ***  %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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}

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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* *   * *  * *****  ****    * *  ** *   * *   %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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*  ** *    *******    *****  *  *    **     ** **    ** **  * ****    **   * = num / 10;
* **  ** * * *  * * *      ****  ** ** *    *** * *  * *  *  * ******   ***   *****  *
    }
* **  * ****   *****  **  * *  **  ***** ** %d", digits,sum);

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

Comments

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