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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 * ** **   *  * ** ** **  *   *** 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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***  *  *   * * of x and y:  ***      
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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!
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 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;
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  *** **  ** * **    *  * ** ****      **  ****  * x,y);
  ** * **  **  ***      * 
 * ***  *     *  * ** *   ***    * * 0;
}

Comments

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