Check Whether Stack is Empty or Not ? : Data Structure

1. Function returns “True” if Stack is Empty.
2. Function returns “False” if Stack is Non-Empty.
3. Function Takes “Pointer to Stack”

int empty (stack *s)

1. Return Type : Integer. [Empty Stack Return 1 , Non Empty Stack Return 0 ]
2. Parameter :  Address of Variable of Type Stack .

How to Call this Function From Main ?

typedef struct stack{  int data[MAX];  int top;}stack;

void main(){stack s; // Step 1 : Declare Variable of Type Stack---------------------  ---------------------  i = empty(&s);   // Pass By Reference------------}

1. Pass “Stack” Variable to “Empty Function”  using pass by reference.
2. As Empty Function returns integer , we have facility to store returned value into some integer variable so we have written [ i = empty(&s) ]

int empty(stack *s){  if(s->top == -1) //Stack is Empty     return(1);  else     return(0);}stack;

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