#include<stdio.h>
#include<stdlib.h>
#define N 3
struct student
{
   int num;
   char name[20];
   int socer[3];
}stu[N];
int main(void)
{
  struct student *input();
  void output(struct student *p2);
  struct student *p;
  struct student *p2;
  printf("num    name          socer\n");
  p=intput();
  p2=p;
  printf("num    name          socer\n");
  output(p2);
  return 0;
}

struct student *input()//字符数组的输入函数？
{
   struct student *p;
   p=stu;
   for(;p<stu+N;p++)
       scanf("%d%s%d%d%d",&p->num,&p->name,&p->socer[0],&p->socer[1],&p->socer[2]);
   p=stu;
   return(p);
}

void output(struct student *p2)
{
  for(;p2<stu+N;p2++)
     printf("%5d %-10s %2d  %2d  %2d\n",p2->num,p2->name,p2->socer[0],p2->socer[1],p2->socer[2]);
  putchar('\n');
}

、、、、、、、、、、、、、、连接不到struct student *input()这个自定义函数

Linking...
3 4.obj : error LNK2001: unresolved external symbol _intput
Debug/3 4.exe : fatal error LNK1120: 1 unresolved externals

函数名是input，调用时却写成了intput！！！
居然还没看明白错误信息！！！