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

** *  ***   *  **  **      ***    * * **   *   * * **
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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* ** *    * ***   *    **  * *  *   *   ** ***    ** *  * *** ",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)
*      *  ***  **   *  **  
* ** ***  ****** ***  * **  * * *    *  **** * **   ** ** *  = 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; *    ***   *  *  *  ****   *
}
*    * *     ****** *
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;
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*  *   ** * ****   ** ***    *
*   ** * *** ******    ** **  *  * if (d==0 && c==0 && b==0 && a==0)
 ***  * **** *** * *** 
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*  ** **  ** *     ******   ** if (d!=0)
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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);
                ^~~~~