C Tutorial/Language/Local variable

Local variable shadows global variable.

<source lang="cpp">#include <stdio.h> int i =0; //Global variable main(){

   int i ;                 // local variable
   void f1(void) ;        
   i =0;                  
   printf("value of i in main %d\n",i);  
   f1();                                 
   printf("value of i after call%d\n",i);

} f1(void) {

   int i=0;         
   i = 50;          

}</source>

value of i in main 0
      value of i after call 0