Define and use Global variables : Variable Scope « Language Basics « C / ANSI-C

1. C / ANSI-C
2. Language Basics
3. Variable Scope

Define and use Global variables

#include <stdio.h>

int count = 0;               /* Declare a global variable   */

/* Function prototypes */
void test1(void);
void test2(void);

void main()
{
   int count = 0;             /* This hides the global count */

   for( ; count < 5; count++)
   {
     test1();
     test2();
   }
}

/* Function test1 using the global variable   */
void test1(void)
{
   printf("\ntest1   count = %d ", ++count);
} 

/* Function test2 using a static variable variable */
void test2(void)
{
   static int count;          /* This hides the global count */
   printf("\ntest2   count = %d ", ++count);
} 



           
       

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