#include <stdio<

float Main(){
    int x,y;
    
    x=1;
    y=7;
    x=x+3;
    x=x+y;
    y=x-y;
    x=x-y;
    
    
    Printf("This demostrate how to swap the value between x and y\n");
    printf("x is %d",x);
    printf("y is %d",y);
    
    int pause;
    scanf("%d",pause);
}