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;
**** *
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* * * *
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**** *
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** *** 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;
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****
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*** 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;
* ***
*
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* * **
* * ** *
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** 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)
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    if (n!=0)
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*** * * * * * * *** *** (g)
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* * * * * * * * ** ** *** *** * * ** * * *
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* ***** ** **** * * * ***** * * * (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)
** * * *** * * * * *** ** *** * ** ** * * * * * *
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* * * * **** ** * ** * ** (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;
* * * * ** ** ** ** * ** **** * *** **** *


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    if (n!=0)
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** * * * **** ******* * ** * *** * * * * * *
**** ** * * **** ** ** * * * **** ***
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* * * *** **** * ****** ** * * * * ** ** * * * (h==0 && g==0)
*** * *** * ** ** * ** * *** * * ****** ** * ***
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* ** * ***** ** *** * * * * ** ** * **** * (h==0 && g==0 && f==0)
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* * * * * ** * * * * * * * * ** **** * (h==0 && g==0 && f==0 && e==0 && d==0)
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** ** ** ** * ** * * (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