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