/*
 * Illustrate scope of variables concept
 */

#include <stdio.h>

double fun(double);

int i = 5;

int main(void) {
    double x;
    x = 1;
    {
        double x;
        int i;
        x = 2;
        i = 3;
        printf("1st: %f  %d\n", x, i);
    }
    printf("2nd: %f  %d\n", x, i);

    fun(x);

    printf("5th: %f  %d\n", x, i);

    return(0);
}

double fun(double x) {
    printf("3rd: %f  %d\n", x, i);
    x += 1.;
    i += 1;
    printf("4th: %f  %d\n", x, i);
    return(x);
}