[C] Why does i become 9?

Question

int i = 10;
void f(void){
int i = 5;
i = 7;
}
void g(){
i = 9;
}
int main(){
i = 1;
g();
f();
printf("%d", i);
return 0;
}

Answer 1

int main(){
i = 1;
// here i becomes 1
g();
//here i becomes 9
f();
//here the local variable i becomes 7 so the global variable i remains 9
printf("%d", i);
//so here it comes 9
return 0;