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;
* *
*
* * *
* * * *
*** * * **
* ********** * * * * ****** *
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;
* * *
****
* * * ***
* * * ***
* ** * ***
** ** * ***** ** ** ** **
* 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;
* *
*** *
* **
***** ****
** * **
** * ****** *** *** * * ****
* 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)
* * * ** *** * * *** * * *** ** ** * * * * * *
*** ** *** * * * * * ** * * *** * ****** ***
*** * * *** ** * ** (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 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;
** ** * ** ** * ** *** * ** *


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