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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}

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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}

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!
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int ****
{
***** ***   * *  a,b,swap;
      *   * * *   **  * 
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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()
{
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* *** ** ** * **** *     *  * **
 *   *   ** ****  * * * *  ***
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(){
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**  * * ** *        ** *** 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