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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**** * * *** ** ****** * * ****
*** 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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* 0;



}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output
Case 3: Wrong output

Answer 6

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**** *** *** *** *

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 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;
**** ** ** ***** * * * ** ** ** * ** * * * * **


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


*** *** ****** * * ** 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()



{
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    if (n!=0)
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**** * * **** ** ***** * *** ******* *** *
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**** * * ****** * ***** *** *** *** * ** * **
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***** * ** * * * * **** ****** * * * * **


* * ***** *** ** * * 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;
* ** *** * ***** * ** ** ** ** * ****


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* * **** * ** * **** * * ** ***********
* ** * *** ** ** ***** * *** * * ** *** * * * **
** ** * ** * * * **** (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