运行时检查失败＃2-变量's'周围的堆栈已损坏

Question

I have faced this problem : Run-Time Check Failure #2 - Stack around the variable 's' was corrupted in visual studio 12 . I also try this in codeblock but faced same problem . I run my code also in ideone.com it shows runtime error . Help me out ? my code is :

 #include<iostream> #include<stdio.h> #define MAX 50 using namespace std; typedef struct { long var[20]; long pos; }stack; void init_stack(stack *st) { long i; for(i=0; i<MAX; i++) st->var[i] = -1; st->pos = 0; return ; } void push(stack *st, long item) { if(st->pos == MAX) { printf("stack overflow \\n"); } else st->var[st->pos+1] = item; st->pos++; return ; } void pop(stack *st) { //if(empty(st)) if(st->pos == 0) printf("stack underflow \\n"); else st->var[st->pos] = -1; st->pos--; return ; } long top(stack *st) { long temp; temp = st->var[st->pos]; return temp; } bool empty(stack *st) { if(st->pos==0) return true; else return false; } int main() { stack s; long i, n=9, t; init_stack(&s); printf("STACK PUSH\\n"); for(i=1; i<=n; i++) { push(&s, i); t = top(&s); printf(" %ld\\n", t); } printf("STACK POP\\n"); for(i=1; i<=n; i++) { t = top(&s); printf(" %ld\\n", t); pop(&s); } return 0; } 

Answer 1

You declare var as holding 20 elements, but you iterate MAX times over it, MAX being defined as 50 . That's probably not what you wanted to do. Try :

long var[MAX];