change-all: func [
    "Change each value in the series by applying a function to it"
    series  [series!]
    fn      [function!] "Function that takes one arg"
][
    forall series [change series fn first series]
]

//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com

#include<stdio.h>
#include<conio.h>
void main(){
	int a, b;
	clrscr();

	printf( "Digite a= " );
	scanf( "%d", &a );

	printf( "Digite b= " );
	scanf( "%d", &b );

	a = b - a + ( b = a );

	printf( "a= %d\nb= %d", a, b);
	getch();
}