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