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