#include <stdio.h>
#include <stdlib.h>
#define N 10
 
int suc(int p){
 
    int temp;
    if (p==N)
        temp=1;
    else
        temp=p+1;
    return(temp);
}
 
void inserir(char F[], int i, int *f, int *over, int *c, char ch){
 
    *over= 0;
    if(suc(*f)==i){
        printf("Overflow na fila\n");
        *over=1;
    }
    else{
        *f=suc(*f);
        F[*f]=ch;
        *c = *c + 1;
    }
 
}
 
char remover(char F[], int *i, int f, int *c){
 
    char temp;
    if(*i==f)
        printf("Underflow na fila");
    else
    {   *i=suc(*i);
        temp=F[*i];
        *c = *c + 1;
    }
 
    return(temp);
}
 
void exibirSomenteFila(char F[], int i, int f){
 
   int x;
   if (i == f)
     printf ("\nFila vazia");
   else
   { 
   	   x=i;
       while (x != f){ 
       	x = suc(x);
        printf(" %c ",F[x]);
       }
   }
   printf ("\n");
}
 
int main(){
 
	char F[N+1], ch;
	int i,f, minutos, contador, ov, r, k ;
 
	minutos=0;
	i=1;
	f=1;
	contador=0;
	ov=0;
 
	while(contador<40){
 
	    minutos++;
	    if (minutos % 2==0){
	        inserir(F, i, &f, &ov, &contador, 'a');
	        if (ov==1){
	            printf("A area sera esvaziada");
	            exibirSomenteFila(F,i,f);
	            while (i != f){
	                ch=remover(F, &i, f, &contador);
	                printf("%d", ch);
	            }
	            inserir(F, i, &f, &ov, &contador, 'a');
	            exibirSomenteFila(F,i,f);
	        }
	    }
 
	    if (minutos%3==0){
	        r=rand() % 3;
	        k=1;
	        while (k<=r){
	            ch=remover(F, &i, f, &contador);
	            printf("%c", ch);
	            k++;
	        }
	    }
 
	    if (minutos%8==0)
	        exibirSomenteFila(F,i,f);
	}
 
	exibirSomenteFila(F,i,f);
	
	return 0;
}

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