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