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);}