✪ Choose the correct option.
Find the output on a 64 bit GCC compiler.
# include
int main(){
int a=0;
{
int a=10;
printf("%d",a);
a++;
{
a=20;
}
{
printf(" %d",a);
int a=30; {a++;}
printf(" %d",a++);
}
printf(" %d",a++);
}
printf(" %d",a);
return 0;
}