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!
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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 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

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int main()

{

int ** ***


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b=a%2;
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}

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 * *** *


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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()



{
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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)
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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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**** * *** * *** * ***** * ** ** ** *** ** (h==0 && g==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 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