Строки C++

#include <iostream.h>
#include <ctype.h>
#include <string.h>
 
void main()
{
int i,n=0;
char str[300]="So she was considering in her own mind, as well as she could, for the hot day made her feel very sleepy and stupid,  whether  the  pleasure  of making a daisy-chain would be worth the trouble of getting up and  picking the daisies, when suddenly a White Rabbit with pink eyes ran close by her.",c;
//str="So she was considering in her own mind, as well as she could, for the hot day made her feel very sleepy and stupid,  whether  the  pleasure  of making a daisy-chain would be worth the trouble of getting up and  picking the daisies, when suddenly a White Rabbit with pink eyes ran close by her.";
for(i=0;i<300;i++)
{
    c=str[i];
    if (isspace(c)) n++;
}
cout<<"Number of word - "<<n+1<<endl;
 
int max,l;
char *p;
p=strtok(str," ,.!?:;");
while (p=strtok(NULL," ,.!?:;"))
{
    l=strlen(p);
    if (l>max) max=l;
}
cout<<"The max length of word - "<<max<<endl;
}

#include <iostream>
#include <string>
 
int main()
{
    std::string Str = "So she was considering in her own mind, as well as she could, for the hot day made her feel very sleepy and stupid, whether the pleasure of making a daisy-chain would be worth the trouble of getting up and picking the daisies, when suddenly a White Rabbit with pink eyes ran close by her.";
    std::size_t end, beg = Str.find_first_not_of(" .,");
    int Cnt = 0;
    while(beg!=std::string::npos)
    {
        end = Str.find_first_of(" .,", beg);
        Cnt++;
        if(!(Cnt%2))
            std::cout<<Str.substr(beg, end-beg)<<" ";
        beg = Str.find_first_not_of(" .,", end);
    }
    std::cout<<std::endl
    system("pause");
    return 0;
}

#include <iostream>
#include <string>
#include <sstream>
 
int main()
{
    std::string Str = "So she was considering in her own mind, as well as she could, for the hot day made her feel very sleepy and stupid, whether the pleasure of making a daisy-chain would be worth the trouble of getting up and picking the daisies, when suddenly a White Rabbit with pink eyes ran close by her.";
    std::istringstream ist(Str);
    int Cnt = 0;
    while(ist>>Str)
    {
        Cnt++;
        if(!(Cnt%2))
            std::cout<<Str<<" ";
    }
    std::cout<<std::endl;
    system("pause");
    return 0;
}