如何统计在一篇文章中某个单词出现了几次，以及第一次出现的位置

#include<iostream>
#include<string>
#include<cstdio>
using namespace std;
void main()
{
  freopen("in.txt","r",stdin);
  freopen("out.txt","w",stdout);
  string word,paper;
  getline(cin,word);
  getline(cin,paper);
  short len1=word.size();
  short len2=paper.size();
  short i,sum(0);
  for(i=0;i<=len1-1;i++)
  {
    if(word[i]>=65&&word[i]<=90)
      word[i]+=32;
  }
  for(i=0;i<=len2-len1;i++)
  {
    if(paper[i]>=65&&paper[i]<=90)
      paper[i]+=32;
    if(paper[i]==word[0])
    {
      short j;
      bool bo(1);
      for(j=1;j<=len1-1;j++)
      {
        if(paper[i+j]>=65&&paper[i+j]<=90)
          paper[i+j]+=32;
        if(paper[i+j]!=word[j])
          bo=0;
      }
      if(bo==1)
      {
        sum++;
        if(sum==1)
          cout<<i<<' ';
      }
    }
  }
  cout<<sum<<endl;
  fclose(stdin);
  fclose(stdout);
}