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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*  *  *    **** **   *  *** 
 **** **    *   * ***  ** **  *   * *  ***  * %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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* ** * * **** **  *  ** * ** ** ** * %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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**  ****    *  * * ***    *   ***  ** *    *   *  * *   = sum + n%10;
**  *  ****  **  *** * * ***  *  **  * *    *  *    *
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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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**  * **      *  ** ***   ** * *  * * **** ***  **** *  * **** **  *** * *  ***  *    
    }
*  *   *  ****    *   *     **    ** * %d", digits,sum);

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

Comments

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