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