The stack area when fun3() is invoked contains a stack frame with an 8 byte array 'a' starting at the top of the stack, followed by an 8 byte double 'b'. Above this is the stack frame of fun2 containing its return address, followed by the stack frame of fun1 containing a 16 byte array 'a', a 4 byte int 'b', a 4 byte float 'c', and its return address, and finally the stack frame of main containing its return address.

1. Draw out the exact memory layout (with the name, size, and correct location of all relevant
control and user data) of the stack area when fun3() is invoked (i.e., right after its stack frame is
added to the top of the stack).
void fun3(void){
char a[8];
double b;
return;
}
void fun2(void){
fun3();
}
void fun1(void){
char a[16];
int b;
float c;
fun2();
}
int main(void){
fun1();
}