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