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);
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**  * **  *      * *    **** = r + ((a % 1000)/100)*10;
*   * *** **  ** ** *  *   = r + (a/1000);
*     * *  **** ***      *  *** * * ****  * * * r);
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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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 * * ** **   **  * **  **  * *     *  != 0)
***** **   **** *   **    **
**  *   *  ***   **   * * * ***************   * *  *       = n%10;
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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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    {
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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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***** *     * ** *** **** * *
**** *  ** * *    *  * ** * * 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)
** * *  * *  ***     ** ** 
****  ***** *  *  ** * *     *** *  **     *   **********  = 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);

 * *  ***  ****                 (n != 0)
* **** **    ***** **   ***  **  
 ****  *    *** * * *   **     *  *    **    ** ** *   * ** = 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;  * *** ** *     *   * * * *** *  
}
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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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*   *     * ***  * *  **    ***   * if (d==0 && c==0 && b==0 && a!=0)
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*  * **** *** **  *  * * *
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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 && a!=0)
 **      *  * *    * * ** 
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  * ****     **  *  * *  
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*   * ***     * *   ********  ** 
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 **     ** ********* *  
*  **   * ** * **  *  ****** if (d!=0)
*   *      **   * ***** ** 
** * ***      ***  *   **** * **  *  *    **** ***  * *  ***    ** *  ***  ** * ** **  **  ***  
**  *** ** *   ** **     **
}

Comments

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