求大佬解释，我这段代码哪错了

#include<iostream>

using namespace std;



struct student 

{

	int num;



	char name[10];



	int score1;



	int score2;



	int score3;



	float aver;

};



void main()

{

	void input(struct student stu[]);



	void scoresort(struct student stu[]);

	

	void output(struct student stu[]);



	struct student stu[3],*p=stu;



	input(p);



	scoresort(p);



	output(p);

	

}



void input(struct student stu[])

{

	int i;



	printf("NUM\tNAME\tSCORE1\tSCORE2\tSCORE3\n");



	for(i=0;i<3;i++)



	{



		scanf("%d%s%d%d%d",&stu[i].num,stu[i].name,&stu[i].score1,&stu[i].score2,&stu[i].score3);



		stu[i].aver=(stu[i].score1+stu[i].score2+stu[i].score3)/3;



	}



	printf("\n");

	

	cout<<"Before Sort:"<<endl;



	printf("NUM\tNAME\tSCORE1\tSCORE2\tSCORE3\tAVERAGE\n");



	for(i=0;i<3;i++)



		printf("%d\t%s\t%d\t%d\t%d\t%f\n",stu[i].num,stu[i].name,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].aver); 



	printf("\n");



	

}



void scoresort(struct student stu[])

{

	int i=0,j,k;   

	struct student p;

	

	for(;i<2;i++)

	{	k=i;

		

		for(j=i+1;j<3;j++)

			

			if(stu[j].aver>stu[k].aver) k=j;

				

				if(k!=i)

				

				{

					p=stu[i];stu[j]=stu[k];stu[k]=p;

				}



			

			

}



void output(struct student stu[])



{

	int i;        

	

	cout<<"After Sort:"<<endl;

	

	printf("NUM\tNAME\tSCORE1\tSCORE2\tSCORE3\tAVERAGE\n");

	

	for(i=0;i<3;i++)

		

		printf("%d\t%s\t%d\t%d\t%d\t%f\n",stu[i].num,stu[i].name,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].aver); 



	printf("\n");

}

提示错误：
c:\documents and settings\administrator\local settings\temp\vmware-administrator\vmwarednd\17b02f10\55555.cpp(92) : error C2601: 'output' : local function definitions are illegal
c:\documents and settings\administrator\local settings\temp\vmware-administrator\vmwarednd\17b02f10\55555.cpp(105) : fatal error C1004: unexpected end of file found

错哪了，要咋改啊!