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

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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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{
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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* * *  *   * *** *  **   *  * ** **  **  *  * ****  *  = 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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    }
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** **  * *   *       *  *   *******   %d %d %d\n",c,d,e,f);
**    *  * *  *    *  *  **  ** ** *    %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