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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* *   * *  *** *  *    * *  *  * 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;
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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;
* **   **      * ***   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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**       **** ** *  **** * = y;
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 *  * *** *********  *    *  ** *     *   *  *  x,y);
         ***  * * * *** *  
 * *  *  **  ** * *** ****   * ***  0;
}

Comments

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