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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*  **  *** *  **  ** **** * * ** 
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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

---

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!
*   * *** **  ** *   *
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!
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 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;

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

Comments

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