10-19 Exercise 3: Prints the number with its digits reversed

Question

Write a program that input four-digit number, then prints the number with its digits reversed .

寫一個輸入4位數字，反轉輸出這個數字的值

Example input: 

5455

Example output:

5545

Example input: 

5400

Example output:

45

Answer 1

Hidden content!
#include **  *    **   * 
int main()
{
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** * ***  **  * * ** *     * a,r;
* *** **     **   * *** **    *  ***  ******* &a);
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**  ***** * *  * ** *    *  ****  *    *    *** r);
***** *****  ** *    *** *  **** 0;
**** ** * *  ** *  **    
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 ******* *  *  ****    **      0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

Answer 2

Hidden content!
#include     **  **    
int main()
{
    * ** * *       ** **    n, reversedNumber = 0, remainder;

**   *** **  ***** **   * * ** * *    *  * an integer: ");
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*****      ** *  *  *   *   *

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return 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

Answer 3

Hidden content!
#include<stdio.h>
int main(void)
{
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** *   **    ******  * **** ***** **   0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output

Answer 4

Hidden content!
#include<stdio.h>
int main(void)
{
 *  ** ** ******  **  *    *    tab[5],i;
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**** **  **  ***  ** *** *** 
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**   ** *   ** **** * *** * * *  ** **** * ******    *  ** ",tab[i]);
  **** **     ***  ** 
  *   **  *** ** *  **   * *  0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output

Answer 5

Hidden content!
#include **    ***   * **
int main()
{
 *****   * *       **** ***  ** n, reversedNumber = 0, remainder;
*    * **** *   *** * * * **  * **** * *******   ** &n);

***   ** *** * *  ***  * *** * *    != 0)
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 * **   ** * *   ***   ****** * *   ** * **  * ***   *   = n%10;
  *** *     **  ***  ******* **  *    *  *  *    * **  * **  * = reversedNumber*10 + remainder;
*** *  **  * *****     *       *  ****  *** *** * ***** /= 10;
*  * **  ** **    ****** * 

 *      *  * ** * ** * ** *  ** *   ** ** ** reversedNumber);

*  * * *  * **   *  * **  * *   0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

Answer 6

Hidden content!
#include <stdio.h>
int main()
{
*** *** **** *   * ** * a,b,c,d,rev;
** ** * **** **** ** * **  * ** * *  **** ****** *   ******   ****  *** 
 *   *  * *** * ** *** ** **     * *   
 * ***** ** *** * ***     ***       ** *** *
* ****** ***     * ****   **  **  * 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

Answer 7

Hidden content!
#include <stdio.h>
#include   ***  *** * 

int main()
{
*    * * ***  *   ****   *** n, reverse = 0;

******  * *  *     * ** * ***** **      *  *     &n);

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**********    **    ***  * * **
* **   * *** ***      * *  ***   **    ***    *   *    *  * **  = reverse * 10;
**  *  **** * *    * * * ** * * *       *****    *    *    *    = reverse + n%10;
***  ***** ** * **  *  ** * **  *** * **     *     *  *   * **   ** * *  **  **   ** * ** n/10;
*  *  **** ***** **** *

 * ** ****  *** ****     * * ****     * *  * * reverse);
  *   ****   * **   *  * ******  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

Answer 8

Hidden content!
 ******* *   *  *
int main(void){
int num;

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while(num!=0){   *** ** * **   
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num/=10;  ** *** *** *  *** *  ***
}
*  *  *     *   ***  ***   *
return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output

---

-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output

---

-----------Re-judge-----------
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output
Case 5: Wrong output

Answer 9

Hidden content!
#include<stdio.h>
int main()
{
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*  *   *****  * ** *  * *
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

---

-----------Re-judge-----------
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output
Case 5: Correct output

Answer 10

Hidden content!
#include<stdio.h>
int main()
{
* * * * * * * ** ******  a,b,c,d;
   **   * ** ***** ***  **   *******    **** *  ***** *  *   *   ***   * **
***** * ** **** * **********   (d==0 && c!=0)
      *       * *  *** ****  **** *
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*  *  *   ** * ***  * *        *
**** **  ** * *  *   * ***   *  if (d==0 && c==0 && b!=0)
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    * * * ** **** *  * 
** * **   * ** * **  * * **    if (d==0 && c==0 && b==0 && a==0)
 ***    * *******    *** ***
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*  **** **  ** * ***  * ** * 
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* *     *   * *******   ***  ** *
}

Comments

prog.c: In function 'main':
prog.c:20:16: warning: too many arguments for format [-Wformat-extra-args]
         printf("&1d",a);
                ^~~~~