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()
{
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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

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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!
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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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*    * *    *     *  * *     = x;
*   ** *** *** *     * ** **   = y;
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     *****  *        ****
 *   **** ** ** ****   **  ** **  **  *  ***   * *  x,y);
** *     ** **  * **** *  
*****        **  **** *      * * * * 0;
}

Comments

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