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


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    if (n!=0)
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* ** * ** ** * *** * ** ** *** ** *** * *** * * * ** *
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* * * ** * * * * ** (e)
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*** * * * ** * **** * * ** ** ** *** *** **
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*** * ** *** * * * ***** (a)
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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;
* *** ***** ** ********** * * *** * *


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