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