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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* ** *  ** * * *   **** *** *  ** 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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*****   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;
**     **  **   * a);
* ** ** ** *  * *** ***
   *         *  * 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;
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*  * *    *  *** ******
  * * *** ***** *  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!
    ** ****  *****  *
******   * 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(){
*  *    * ********    *** **
 ***   * *  ***** *   *** * ** x,y,temp;
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*   *  *  *  **** *    *****
 * ** ***  * *  *** **  *   ****  0;
}

Comments

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