how refer to a local variable share same name of a global variable in C? -

for example

#include<stdio.h>  int foo = 100;  int bar() {     int foo;     /* local foo = global foo, how implemented? */     return 0; }  int main() {     int result = bar();     return 0; } 

i think in function bar, calling foo directly global foo. how can refer local foo? know in c++, there pointer. however, c has similar?

thanks lot!

no, declaring foo in bar(), have taken global foo out of scope. inside bar() when refer foo local variable.