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

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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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** * * (){
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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);
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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!
* *  *   ******  * **  
   *  **  ** 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(){
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*  ****  * *     * * * *  ** *  x,y,temp;
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*         **    *   **** **  *****  * **  *   *** * ****
    
*   **** **** * *  *** ** **** = x;
 *** **  ***  * * *      * ** = y;
** *  *        ** ***** ** = temp;
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* * *   *** **** * *  * ** ********  *  **  ** * * x,y);
** **      *   ***** ** * 
 *  *** *     *  **   ***** *    ***    0;
}

Comments

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