又是输出流出错了，帮帮忙啊

	friend  ostream& operator<<(ostream& o,Ecosystem& e){
		for(int i=0;i<5;i++){
			return o<<e.queue[i];
		}
		return o<<sp;
	}

class Ecosystem{
	Time t;
	Enviornment current;
	float sp;
	int s;
	Queue queue[5];
	int total;
public:
	friend  ostream& operator<<(ostream& o,Ecosystem& e){
		for(int i=0;i<5;i++){
			return o<<e.queue[i];
		}
		return o<<sp;
	}
	Ecosystem(){
		t.set(1);
		total=0;
		current.set(t);
		queue[0].set(s,0,current);
		queue[1].set(s,1,current);
		queue[2].set(s,2,current);
		queue[3].set(s,3,current);
		queue[4].set(s,4,current);
		for(int i=0;i<4;i++){
			total+=queue[i].total;
		}
	}
	ostream& run(ostream& o,int n){
		for(int i=0;i<n;i++){
			int l=4*base();
			int k=4*base();
			if(l>k){
				swap(l,k);
			}
			int g=queue[l].n*base();
			int h=queue[k].n*base();
			Species* s1=&queue[l].species[g];
			Species* s2=&queue[k].species[h];
			Queue* q1=&queue[l];
			Queue* q2=&queue[k];
			q1->statistic-=s1->statics;
			total-=q1->total;
			q1->total-=s1->amount;
			s1->change(int(s1->amount+s1->adaptness*s1->amount-s2->amount*0.1*s1->amount*s2->amount/total/total*abs(s1->strength-s2->strength)*1/(l-k)/(l-k)));
			q1->statistic+=s1->statics;
			q1->total+=s1->amount;
			total+=q1->total;
			q2->statistic-=s2->statics;
			total-=q2->total;
			q2->total-=s2->amount;
			s2->change(int((s2->amount)+(s2->adaptness)*(s2->amount)-(s1->amount)*(s1->amount)*(s2->amount)/total/(total-1)*abs(s1->strength-s2->strength)*1/(l-k)/(l-k))*0.7);
			q2->statistic+=s2->statics;
			q2->total+=s2->amount;
			total+=q2->total;
			int temp=0;
			for(int i=0;i<5;i++){
				temp+=queue[i].statistic;
			}
			sp=1-temp/total/(total-1);
		}
		return o<<*this<<endl;
	}
};

error C2326: 'class std::basic_ostream<char,struct std::char_traits<char> > &__cdecl Ecosystem::operator <<(class std::basic_ostream<char,struct std::char_traits<char> > &,class Ecosystem &)' : 

class Species{
public:
	string name;
	int amount;
	float adaptness;
	float strength;
	long int statics;
	Enviornment best;
public:
	Species(){
		float temp1=f1();
		float temp2=f1();
		float temp3=f1();
		best.set(temp1,temp2,temp3);
	}
	void change(int a){
		amount=a;
		statics=a*(a-1);
	}
	friend ostream& operator<<(ostream& o,Species& s){
		o<<s.amount<<endl;
	    return o;
	}

	void init(string na="aaa",int n=1000){
		name=na;
		amount=n;
        statics=amount*(amount+1);
	}
	void reset2(int i,Enviornment& current){
		if(i==0){
			strength=s1(i);
			adaptness=s2(i)*f(best,current)/5.0-0.2*1/5.0;
		}
		if(i==1){
			strength=s1(i);
			adaptness=s2(i)*f(best,current)/5.0+0.1/5;
		}
		if(i==2){
			strength=s1(1);
			adaptness=s2(i)*f(best,current)/7.0+0.05;
		}
		if(i==3){
			strength=s1(1);
			adaptness=s2(i)*f(best,current)*0.1+0.1;
		}
	}
	void reset(string na,int am,int i,Enviornment& current){
		name=na;
		amount=am;
		reset2(i,current);
	}
	void reset(int am){
		amount=am;
		statics=amount*(amount-1);
	}
	ostream& print(ostream& o){
		return o<<amount<<" ";
	}
};
class Queue{
	Species* species;
	int amount;
	int n;
	int level;
	long int statistic;
	int total;
	int remain;
public:
	friend class Ecosystem;
	Queue(){}
	void set(int nn,int le,Enviornment& current){
		level=le;
		amount=nn;
		n=0;
		species=new Species[nn];
		statistic=0;
		total=sum;
		for(int i=0;i<4-level;i++){
			total=total*0.1;
		}
		remain=total;
		init(current);
	}
	~Queue(){
		delete []species;
	}
	void push(Species& s){
		if(amount==n){cout<<"full"<<endl;exit(0);}
		species[n]=s;
		statistic+=s.statics;
		n++;
	}
	Species* factory(Enviornment& current){
		Species* s=new Species();
		s->reset2(level,current);
		return s;
	}
	void init(Enviornment& current){
		int s=amount*(level+1)/15;
		for(int i=0;i<s;i++){
			Species* s1=factory(current);
			if(i==s-1){s1->amount=remain;}
			s1->amount=remain*base();
			remain-=s1->amount;
			this->push(*s1);
		}
	}
	void remove(int i){
		if(i>=n || i<=0){
			return;
		}
		statistic-=species[i].amount*(species[i].amount-1);
		total-=species[i].amount;
		for(int j=i+1;j<n;j++){
			species[j]=species[j+1];
			n--;
		}
	}
	friend ostream& operator<<(ostream& o,Queue& q){
		for(int i=0;i<q.n;i++){
			return o<<q.species[i];
		}
	}
};

7 个解决方案

#1

    friend  ostream& operator<<(ostream& o,Ecosystem& e){
        for(int i=0;i<5;i++){
            return o<<e.queue[i];
        }
        return o<<sp;
    }
错了，应该
    friend  ostream& operator<<(ostream& o,Ecosystem& e){
        for(int i=0;i<5;i++){
            o<<e.queue[i];
        }
        return o;
    }

#2

VC++6.0??

换个编译器

#3

引用 1 楼 happymawolf 的回复:

    friend  ostream&amp; operator<<(ostream&amp; o,Ecosystem&amp; e){
        for(int i=0;i<5;i++){
            return o<<e.queue[i];
        }
        return o<<sp;
    }
错了，应该
    friend  os……

sp也要输出咋办呢？

#4

这样
friend ostream& operator<<(ostream& o,Ecosystem& e){
  for(int i=0;i<5;i++){
  o<<e.queue[i];
  }
  o<<sp;
  return o;
 }

#5

vc++6.0不好使，其他的会好使？？

引用 2 楼 bargio_susie 的回复:

VC++6.0??

换个编译器

#6

引用 4 楼 happymawolf 的回复:

这样
friend ostream&amp; operator<<(ostream&amp; o,Ecosystem&amp; e){
  for(int i=0;i<5;i++){
  o<<e.queue[i];
  }
  o<<sp;
  return o;
 }

原来是e.sp没写，谢谢你啊

#7