Please how do you do nested if statements

Question

c programming

Answer 1

if (true)
{
if (true)
{
//do something
}
}

Answer 2

int age = 18;
if(age > 12){
printf("Hey there kid\n")
if(age >= 18)
printf("Sorry you're not a kid");

}

//just an useless example.
//useless but works

Answer 3

thank you