#include<iostream>using namespace std;struct Stack{ int maxCnt; int* elements; int top,bottom;};Stack* createStack(int max=100){ Stack* stack = (Stack*)malloc(sizeof(Stack)); stack->top=0; stack->bottom=0; stack->maxCnt=max; stack->elements = new int[ stack->maxCnt]; return stack;}bool push(Stack* stack,int value){ if(stack->top>=stack->maxCnt) return 0; stack->elements[stack->top++]=value; return 1;}bool isEmpty(Stack* stack){ return stack->top<=0;}bool pop(Stack* stack,int* ans){ if(isEmpty(stack)) return 0; *ans = stack->elements[--stack->top]; return 1;}bool top(Stack* stack,int* ans){ if(isEmpty(stack)) return 0; *ans = stack->elements[stack->top-1]; return 1;}void clearStack(Stack* stack){ int x; while(!isEmpty(stack)) { pop(stack,&x); }}void outPut(Stack* stack){ int x; while(!isEmpty(stack)) { pop(stack,&x); cout<<x<<" "; } cout<<endl;}void main(){ int len=12; Stack* st = createStack(); int v; for(int i=0;i<len;i++) { v = rand() % 100; cout<<v<<" "; push(st,v); } cout<<endl; outPut(st); clearStack(st); for(int i=0;i<5;i++) { v = rand() % 100; cout<<v<<" "; push(st,v); } cout<<endl; outPut(st); for(int i=0;i<5;i++) { v = rand() % 100; cout<<v<<" "; push(st,v); } cout<<endl; //outPut(st); pop(st,&v); cout<<v<<endl; ///outPut(st); top(st,&v); cout<<v<<endl; outPut(st); cin>>len;}
Stack Array Implementation