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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*  **  * *   *    *** ******   *** *    ** %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()
{
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 * *  ***  **  *   * *   *  *    *  * * * *    *      
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***   * *** ** * ***   *    *    ****** ****   **     ** = 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()
{
* * * ***  ****   ***       ****  a=1,b,c,d,e,f,g;
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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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*    ** * **** **** * *** ** * ** ** *****  ** *** *   * *** *    **   * 
    }
      **  **** *** **  *** *  * *** %d", digits,sum);

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

Comments

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