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()
{
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}

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

Comments

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

Answer 6

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

Comments

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