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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f2=2;
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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!
* * * ***   ***    *  * 
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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** *  * ****** **   *** *      * *   ** %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)
{
 ** **  * ** *** ** **** **** 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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}

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()
{
 *** *  ****  * * **   * **  a=1,b,c,d,e,f,g;
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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;
*  *** ** **  * *  *  ** ** ** * * * *     ** * *  *      ** ** 
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  *   **    * ** *****  ****    **  *  *   
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    * *   **** *  ***** ***  ** ***   *   *   **  ** ******* *  * ** *** += num % 10;
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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