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()
{
 ** *    * **   * *   ****  * ** first_number;
 *  *  * ***  * ** * *   *    **  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

---

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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*** 
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   *    **** *** *    * x **  y *   * **     *   * *  * 


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

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

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

return 0;
}

Comments

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

Answer 9

Hidden content!
*** ** ** ** ** * 
* ** *    * main(){
int a,b;

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

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

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

Comments

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