10-19 Exercise 2: Convert decimal to binary number

Question

Write a program to convert a decimal number (<256) to binary. Use +-*/% operations only. Loops are not permitted

寫一個把十進位轉換成二進位數的程式。請使用 +-*/% 運算子，不允許使用迴圈。

Example input:

50

Example output:

110010

 

Answer 1

Hidden content!
* * * ** * * *

int main()

{

int ** ** **


*** * * * * *** ** * *

b=a%2;
** *
*
** ** **
** ** ****
** ** ** *
* * * * * *** *** *** * ** *
* ** 0;



}

Comments

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

Answer 2

Hidden content!
* ** * * **

int main()

{

int ** **


* **** * * * * * *

b=a%2;
** * *
* **
**
** *** *
** ***
** ** ** * ***** * * ***
* 0;



}

Comments

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

Answer 3

Hidden content!
* *** *** * ** **

int main()

{

int ** *


** **** * * ***** *

b=a%2;
*
* * ** **
* * *
** * **
****** *
****** * * * ***
* 0;



}

Comments

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

Answer 4

Hidden content!
* ** **** ** * ** **

int main()

{

int * *****


* ** *** ** *****

b=a%2;
***
** * **
* * *
** **
** *** *
** * *** ** *** * * * *** *
* * 0;



}

Comments

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

Answer 5

Hidden content!
*** *** * ****** ***

int main()

{

int * * ** **


* * ** * ** ** * **

b=a%2;
* * ***
*
* * *
***** *
* ** * * **
** ** ** ** * * * * *
* * * 0;



}

Comments

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

Answer 6

Hidden content!
* * ** **** * **

int main()

{

int ** **


****** * *** * * ***

b=a%2;
***
*** ** *
** *
* ***** *
** ***
** ** **** ** **** * * * *
* 0;



}

Comments

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

Answer 7

Hidden content!
#include <stdio.h>



int main()



{
* *** * ***** * n,a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=0;
** ** ** ****** * ******* *** **** ** * * ** ** * **


***** * * ** **** * ******* (n!=0)
*** ** ** * **** * *** * ** *** ****** ** **** * * *
* *** *** * ** ***** ** *** * ** * *** *** *
** ** *** ***** * *** * * (n!=0)
** * * * ** ******* *** * * ** * * ******* *** *
* *** * * * * ** ** **** *** * ** *** * * ***

    if (n!=0)
* ** * * *** ** * * * * ** **** ** * ** ****** * *
** *** **** * *** * **** *** * ** ** ** *** **** **
* ** *** * * * * (n!=0)
* *** * * *** * * * ***** ** * ***** *****
* *** ** * * * ** ********* ** * * ** * ** *** *
** * ** **** ** * ***** (n!=0)
* * * ***** * * * *** * ** * * *** * ** * * * * *
**** * * *** * * * ** *** * * * ** * *** * *
**** *** * * * ** ** * (n!=0)
** ** ** * *** ** ** * **** **** ** * *
* * ** *** * * **** *** ** *** *** * * * **
**** * * * * * * * ** * * (n!=0)
**** ** ****** * * * * *** * ***** ** *
* *** * * * ** * * * ** ** * **** ** **
** * * ** *** ** * (n!=0)
**** * ** * ** * * * * * * ** *
** **** ** * ** * * ** (h)
* *** * ** ***** ** * *** ** * ** * * ******* ********
*** * *** * ** * * * ** (g)
* ** ** * *** * ** * * * * * * ** ** ** ** ***** ** (h==0)
**** * ** ** ** * ** ** ** * ** *** ** * **** ** * **** *
* * * * ** * * * (f)
******* * * * * *** * ** * * * * ** ** ** * (h==0 && g==0)
* * ***** ****** * * * * * * *** ** *** *** *
* ***** * * ** *** * * (e)
**** * ** * ** ** * * * ** ** * ** ** ** (h==0 && g==0 && f==0)
** *** ** ** * ** *** * ***** ** * * * * * * *
* ** ** ****** ** * * (d)
*** ** *** * ** * * ** ** **** ** * * ** ** * *** * (h==0 && g==0 && f==0 && e==0)
* * * * * ** ** ** * * *** ****** ** ***
* *** * * * ** * (c)
* ** * * *** ** * * * ** * * * * (h==0 && g==0 && f==0 && e==0 && d==0)
***** * * * ** * * **** * * * * * * ** *
* * * * * ** * (b)
** * * ***** * *** * ** *** * ** * * * * * (h==0 && g==0 && f==0 && e==0 && d==0 && c==0)
* ****** * * **** * ** * * ** ** * *
** * * * *** * ** (a)
** * * * * * ** ** * ** * ** ** * * ** ** ** (h==0 && g==0 && f==0 && e==0 && d==0 && c==0 && b==0)
* * ** *** * *** *** ** * ** ******


* ** * **** * *** * * * * 0;





}

Comments

prog.c: In function 'main':
prog.c:9:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:11:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:12:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:14:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:15:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:17:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:18:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:20:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:21:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:23:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:24:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:26:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:27:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:29:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
cc1: all warnings being treated as errors

Answer 8

Hidden content!
#include <stdio.h>



int main()



{
* **** * * **** *** n,a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=0;
* * *** ***** * * ** * *** * * ***** * *


* ** * * **** ** ** ** (n!=0)
* * ** ** * * ** ** * * *** * * *** ** * **
******** * ******* * * * * *** *********** * * **** ** * *
** **** ** * ** * * ** (n!=0)
**** ** * ** ** ** **** * ** *** * ***
** ** ** * *** * ** * ** **** * **** * *

    if (n!=0)
* *** *** * ** ** ** * *** *** * ** ** * * * *
*** * *** * * * ** * ** *** * **
* * *** * * *** ** ** * (n!=0)
** *** ***** * ** * ********* * * * ** ** ***** **
*** ***** *** ** ******* *** * **** * ***** * * *
* * ***** ** *** *** (n!=0)
******* *** *** ***** **** **** * * ** *** * *
* *** * * * *** ***** * * * ** * * ****** ** * *
* * * ** * * * ****** (n!=0)
**** * * ** * ** *** **** ** * ** *
* * ** *** * * ** ***** * ** * * ** * ** **
* ***** * *** *** ** ** ** * (n!=0)
* * ** * ** *** * * *** ** * ** * *** ***
**** * * * ******* *** * * * * *** * *
* *** * * *** * ** * (n!=0)
* * * * * *** * * ***** * * * * ** * * ***** * *
********* ****** ******* (h)
** ** * ***** * * * * ** ** * **** * ** * **
** * **** ** **** * * (g)
* ** *** **** * * * ** * ***** * * * **** * (h==0)
* **** * * * * ** * ** ***** ** * * ** ** * **
**** ** * ***** ** ** ** (f)
* * ****** ** * *** * ** * ** * ** * *** (h==0 && g==0)
** *** ****** * * ****** ** * * * ** ** * ** * **** **
* * * *** ** * *** * (e)
*** *** * * *** * * ** ** ** ***** ** * * ** * (h==0 && g==0 && f==0)
** ** * * ** ** ** * ** **** **
**** ** ** *** *** *** (d)
* * * * ** *** * * * * ** * ** * ** * (h==0 && g==0 && f==0 && e==0)
** * **** * ** * * ** * **** * * **** **
**** *** * * * * * * *** (c)
** ** *** * ** *** **** * * * (h==0 && g==0 && f==0 && e==0 && d==0)
***** *** ** ** * ** *** **** ** ** * ****** ****
* ** **** * * ** ** *** * (b)
* * * * * * * * *** ** ** *** * * * (h==0 && g==0 && f==0 && e==0 && d==0 && c==0)
* * * ** *** ** ** * ** * *** *
*** **** ***** **** * * * * (a)
** * **** * * ******* ** * ***** **** ** (h==0 && g==0 && f==0 && e==0 && d==0 && c==0 && b==0)
*** ** * *** * * ** ********** ** * * **


* * * ** * * * ** ** * * 0;





}

Comments

prog.c: In function 'main':
prog.c:9:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:11:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:12:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:14:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:15:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:17:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:18:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:20:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:21:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:23:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:24:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:26:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:27:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:29:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
cc1: all warnings being treated as errors

Answer 9

Hidden content!
#include <stdio.h>



int main()



{
*** * * * * * ** ** * *** * n,a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=0;
* * * * *** ***** * **** ***** * * ** ***


** * * ** * * * ** * * * (n!=0)
* * ** **** * ** * * ******** ** ** * * * **
* **** *** * ** ** * * * * ** **** * * * * *
** * *** ** ********* *** ***** (n!=0)
** **** ** ** ****** * *** * * * ** * ***
*** * * ** ** * * ** *** *********

    if (n!=0)
** ****** ** *** *** * * *** *** **** **** * ***
* * ** * * * * ** ** ** * ** *** *****
** * ******* * * (n!=0)
* ** * *** * *** * ********* *** * * * * * ** **
** *** ** * * * *** * * * ** * ** **
** ** * * ** * **** (n!=0)
***** ** **** * * ** ** * ** **** *
*** *** *** *** * ** *** * ** ***** ** *
* ** * ** *** * * * ** ** * (n!=0)
**** *** * *** ** *** ***** *** * * * *** **** **
*** * * * * * **** * ** * *** * ** * * * ****
**** ** * ** *** * * * (n!=0)
* * * **** * * * ** ******** * *** * *
* **** * ******** * * * * * ** ******* * * **
*** ***** ****** * * ** (n!=0)
* * ** * * * ** ** * * *** * ** ** *
** * * * ** **** * * (h)
* ** **** * * ** *** * ** * * * ***** * * ** * **
* ** * * * * * * * * *** * * (g)
*** * * * ***** *** ** * ******** * * ** (h==0)
** * * * * *** *** * ******** * * ** * ***** * * * ** * *
* ** *** * **** * *** * (f)
***** * * * * ** * * ** * * ** * * **** **** (h==0 && g==0)
* * * **** * * * **** *** * *** * * *** ** *
* *** * *** ** * ** * (e)
** * ** *** * * * * ** ** * * **** * ** * (h==0 && g==0 && f==0)
* * ** ****** ***** **** * * * *** *** * *
* * * * * * * ** * * (d)
** * * * * * * * * **** ** *** ** * **** ** (h==0 && g==0 && f==0 && e==0)
* * *** * ** *** * * ** ** ******** ** * * *** **
* ** *** * * ***** **** * (c)
** ** *** * * ** **** * ** * *** ** ** * ** ** (h==0 && g==0 && f==0 && e==0 && d==0)
** *** * ** *** *** * * * * * *** ***
** ***** *** * * ** *** **** (b)
*** **** * ** * *** * * * ** * ** * (h==0 && g==0 && f==0 && e==0 && d==0 && c==0)
* ** ** * * * * * * * ** *** * *** **
**** * ** ** * *** (a)
** *** * * * * ******* *** ******* * ** (h==0 && g==0 && f==0 && e==0 && d==0 && c==0 && b==0)
*** ***** ****** * ******** ** ** * * ** * *


* *** *** * ** * ** ** * * 0;





}

Comments

prog.c: In function 'main':
prog.c:9:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:11:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:12:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:14:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:15:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:17:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:18:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:20:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:21:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:23:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:24:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:26:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:27:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:29:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
cc1: all warnings being treated as errors

Answer 10

Hidden content!
#include <stdio.h>



int main()



{
*** * **** ** * * n,a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=0;
* ** * ** * * * ** ** *** *** * ** *** **


***** * *** ** *** * * * (n!=0)
*** * * * *** *** ** * **** *** ** * * **
******** * ***** * * *** ** * ****** * * * *
*** * *** * ** ** (n!=0)
*** ****** * * *** ** * *** * ***** **** * * *
** ** * **** * * *** ****** * * ** * ** * * ***

    if (n!=0)
**** * ** * * *** *** * *** ** ** * ** * **** *
* * ** ** ***** ** ** ** * * ** * ** ** * * * *
*** ** * ** ** * * *** * (n!=0)
*** ** * * * ** * ** ****** * * ** * * *
*** ** * **** **** ** * * ** ** * ** *** * *
* ** ***** * **** * ** (n!=0)
* **** * **** ******* * * * * *** * *****
* * ** * * *** *** **** * ** ****** * **
*** * *** * * * * *** ** ** ** (n!=0)
* ** * * * * * ** ** ** ** *** *
* * * * * * * *** ** *** * * * * ******** *
* * * **** * * * (n!=0)
* * * * * ** ** ** ** ***** * **** * *** ** *** ** *
** * * **** ** **** * **** * * ** * **** * ** *
* ** **** * (n!=0)
* ** * ** * *** * * * *** ** ** ** *
*** * ** * * * * * (h)
* **** **** * ** * ******* * * **** * *** * * ** * *
** ** * * ***** ** * * (g)
** ** * ** ** * ** * * **** * * ** * * (h==0)
* **** * *** ** *** *** ** ******* *** ** * ***** *
* *** * * *** ** ***** * (f)
* * * *** ** *** ** * *** * * ** * (h==0 && g==0)
* * ** *** **** **** * *** * ** ** * *** ** ***
* * ** **** * ** ** (e)
* *** * * * * * * * *** * ** * ** * ** (h==0 && g==0 && f==0)
** * *** **** ** ** ** *** *** **** ** ***** *
* * * ** * * * *** ** (d)
** * * ** * *** ******** * ****** (h==0 && g==0 && f==0 && e==0)
*** ** * **** **** ** ***** ***
*** * *** ** ** ** * (c)
* ** * * * * ****** ** * * *** * * ** **** ** (h==0 && g==0 && f==0 && e==0 && d==0)
* * * * * *** * ** ** ** * * * *** * *** *
* * ** *** ** * * (b)
** * *** * * * * *** * ** **** **** *** ** * * (h==0 && g==0 && f==0 && e==0 && d==0 && c==0)
* * ** ** ** * ** **** * *** * ***** *
* ** *** * * ** * * * (a)
* ** * ** **** *** *** * **** * * * * * * * (h==0 && g==0 && f==0 && e==0 && d==0 && c==0 && b==0)
** *** ***** ** ** * * ****


* * ** * * **** *** * 0;





}

Comments

prog.c: In function 'main':
prog.c:9:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:11:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:12:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:14:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:15:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:17:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:18:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:20:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:21:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:23:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:24:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:26:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
prog.c:27:5: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
     if (n!=0)
     ^~
prog.c:29:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         n=n/2;
         ^
cc1: all warnings being treated as errors