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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}

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

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

Comments

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

Answer 7

Hidden content!
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main()
{
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******* ** ****  **    * ** 
*** *   *  **  *** ** * **  
swap=a;
a=b;
b=swap;
** * **** * *   * ** a);
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**   * *** **  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!
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*** * ** * 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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**  ***   * ****    *** * = temp;
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 ****  ** ****  **  * ***   *  *  ***   *  ** **** x,y);
    ***    * * ** *   * * *
 * **   **  **** ***   **   * * ***  0;
}

Comments

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