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()
{
* ** * **  *** *     *   a,b,swap;
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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()
{
***  **** *      *****  ** * first_number;
* * ** *  *  *  * *    * 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

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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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* * ** 0;
}

Comments

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

Answer 6

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

Comments

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