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

Comments

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

Answer 2

Hidden content!
#include <stdio.h>
int main()
{
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** *   **  ***  *    *  *** *  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!
* * *  ************ **  
* *   * (){
 * **  *** 
***       ****  * ** * of x and y:  ** ***   *
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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!
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int    ** 
{
***** *   ****  *  a,b,swap;
* **     ** ***   * * *  
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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;

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

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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