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

Comments

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