按字典序统计给定文字段单词出现次数

按字典序统计下面这段文字中单词出现的次数

代码：

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
using namespace std;
bool compare(char* a,char* b)//自定义规则排序
{
   
if(strcmp(a,b)==-1) //a<b
 return 1;
if((strcmp(a,b)==1)||(strcmp(a,b)==0)) //a>=b
 return 0; }
void main()
{
   
vector<char*> vec;
char* p="It was the best of times, and it was the worst of times. It was the age of wisdom, and it was the age of foolishness. It was the epoch of belief, and it was the epoch of incredulity. It was the season of light, and it was the season of darkness. It was the spring of hope, and it was the winter of despair. We had everything before us, and we had nothing before us. We were all going direct to Heaven, and we were all going direct the other way. In short, the period was so far like the present period. That some of its noisiest authorities insisted on its being received, for good or for evil, in the superlative degree of comparison only."