#include<stdio.h>

void useGlobal( void );
void useLocal( void );

int x = 1; /* global variable */

int main( void )
{
int x = 5;

printf("x on entering main is %d\n", x);

{/* start new scope */
    int x = 7; /*local variable to new scope */
    
    printf("x in inner scope of main is %d\n", x);
}/* end new scope */

printf("x in outer scope of main is %d\n", x);

useLocal();
useGlobal();
useLocal();
useGlobal();

printf("\nx on exiting main is %d\n", x);

return 0;
}


void useLocal(void)
{
int x = 25;

printf("\n x is %d on entering useLocal\n", x);
x++;
printf(" x is %d on exiting useLocal\n", x);
}



void useGlobal(void)
{
printf("\n x is %d on entering useGlobal.\n", x);

x *= 10;

printf(" x is %d on exiting useGlobal.\n", x);
}