9/28 Write a program to swap the values of two variables

Question

Write a program to swap the values of two variables. The program will ask the user to input variables x and y with numerical values. You must write code that exchanges their values: the value of x after your code runs must equal the value that y had before your code ran, and the value of y after your code runs must equal the value that x had before your code ran.

寫一個交換兩個變數的程式

Example input:

3
5

Example output:

5
3

Remember: Your output may be 100% correct, but your code matters!

Comments

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Answer 1

Hidden content!
#include<stdio.h>

int main()
{
 **  *  * *        *  a,b,swap;
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**    ** *   ****  *     *
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**   *** * *  *    **** *  * *  * **     **   * * ***
 ** ** ************   * * ***  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 2

Hidden content!
#include <stdio.h>
int main()
{
  * *   *      ** *  *      first_number;
       *  *** * *    ****     second_number;
 **   *   * ******** ** **** * swap;

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* * *  *  *   *   *  *   * * * * 0;

}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 3

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

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 4

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

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 5

Hidden content!
 ****  **   * *   ** *  
  **  *   (){
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* ** 
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***  * 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 6

Hidden content!
     *** * * *   *** * 
int ***  ** 
{
   * *** ** ***   a,b,swap;
* ** *   *    *  *   *** * 
     ****     ***    * * ** 
swap=a;
a=b;
b=swap;
    *  *     * **  * *  a);
      *   **** * ** * * *
  *** *     ***   0 ;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 7

Hidden content!
**  *  ***   *  * ** **
main()
{
**           ***   * *  *
 ***    *** *  * **    **   
** ** ** ******    **   * ******
swap=a;
a=b;
b=swap;
  ***     ***  *   ** * a);
** * * * * * *  * * ***
** * * * ***   **   0 ;
}

Comments

prog.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^~~~

Answer 8

Hidden content!
**** ***   * *  *** * *   * 
 int main(){
int a,b;

 ** ***** *  ***   ** *** *  *  * *  ****   **     * *    ***   **

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return 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 9

Hidden content!
  **  ****  **  **  
* ** ** *   main(){
int a,b;

 **      *        *  * * ** *  ** * * ** *  **  *  ** *  * * *  **   ** **

** ** * * *    *  *******   ***     ** * *   * *  * * ***  

return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 10

Hidden content!
#include <stdio.h>

int main(){
 * * * **   **     **  *  ** *
 *** * **     ** **   **  x,y,temp;
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 *  ** *  **    ***********    * *  **** **** * * * 
    
* *      * * * **  ** *  *   *  * = x;
  *  ** ** **   *** *    *  = y;
   *   *** * **  *  *  ** *  * = temp;
*  ** * *  *** **** ***   
  ** ***  * *  ** ** *  ** *** *  ***** ** **  *  x,y);
  ** * * *  ****  * ** * *
*         **** *  * **** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output