/*
Code from Mon Sep 25, 2023
Demonstrates that C has file scope, function (local) scope, for loop scope, and block scope 
*/
#include <stdio.h>

int file = 0; // file level scope

void func_a() {
    file += 1;
    
    // block scope
    { int a = 1;
       printf( "a = %d\n", a );
    }
   // printf( "a = %d\n", a );
   
   // for loop scope
   for (int i = 0; i < 3; i++) {
        int i = 2; // block scope
       printf( "i = %d\n", i );
   }
   //printf( "i = %d\n", i ); // out of scope
    
}

int main( int argc, char* argv[] ) {
    printf( "file in main at beginning is %d\n", file );
    func_a();
    printf( "file in main at end is %d\n", file );
    return 0;
}