A small example showing the function call stack in a C++ program.

1. What is the function call stack?
void a()
{
}
void b()
{
a();
}
int main()
{
b();
}

2. What is the function call stack?
Stack Framemain()
void a()
{
}
void b()
{
a();
}
int main()
{
b();
}

3. What is the function call stack?
Stack Framemain()
void a()
{
}
void b()
{
a();
}
int main()
{
b();
}
Stack Frameb()

4. What is the function call stack?
Stack Framemain()
void a()
{
}
void b()
{
a();
}
int main()
{
b();
}
Stack Frame
a() Stack Frame
b()

5. What is the function call stack?
Stack Framemain()
void a()
{
}
void b()
{
a();
}
int main()
{
b();
}
Stack Frameb()

6. What is the function call stack?
Stack Framemain()
void a()
{
}
void b()
{
a();
}
int main()
{
b();
}

7. What is the function call stack?
void a()
{
}
void b()
{
a();
}
int main()
{
b();
}