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 ***


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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 2

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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 3

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 4

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

int main()

{

int ** * **


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



{
****** * * *** n,a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=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)
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*** ** * * *** **** * *** * *** * * * * ** *
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* * ** ** * * * ** ** * ** * ** ****** * ** **** *
** ** ** * * ** * * * (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