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

Comments

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