public static void main(String[] args) {
int x = 10;
int y = 20;
x=x+y;
y=x-y;
x=x-y;
System.out.println("x:"+x+" y:"+y);
} public static void main(String[] args) {
int x = 10;
int y = 20;
int temp;
temp = x;
x = y;
y = temp;
System.out.println("x:"+x +" y:" + y);
}#include<stdio.h>
int main()
{
int x = 20, y = 30, temp;
temp = x;
x = y;
y = temp;
printf("X = %d and Y = %d", x, y);
return 0;
}