swapping_numbers_call_by_value.cpp

#include<stdio.h>
//CALL BY VALUE
void swap(int x,int y)
{
    int temp;
    temp=x;
    x=y;
    y=temp;
}
int main()
{
    int a,b;
    a=10;
    b=20;
    swap(a,b);
    printf("%d %d",a,b);
}