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

Hidden content!
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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;
* * *   **** ** **  *  ** ***
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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()
{
* *  *** * * ***   **** 
**  * * **  ***  *      *     *
**  ***   ***  * **  *
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;

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

Comments

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