#include <time.h>
#include <string.h>
 
#include <iostream>
#include <fstream>
using namespace std;
 
int main()
{
    ifstream    i_file("input.txt");
    if (i_file.fail()) return -1;
 
    //--- размер файла
    i_file.seekg(0,ios::end);
    long size = i_file.tellg();
    i_file.seekg(0,ios::beg);
 
    char *strbuf = new char[size+1];    strbuf[size] = i_file.read(strbuf,size);
 
    //--- запрашиваем слово
    char word[32] = "";
    cout << "Search: "; cin >> word;
 
    long beg = clock();
    //--- в цикле выводим все найденные слова
    for (char *found = strtok(strbuf,"
  (){}<>;,.:-=+-*/\"); found; found = strtok(0,"
  (){}<>;,.:-=+-*/\"))
    {
        if (!strcmp(found,word) ) 
            cout << "Position: " << int(found-strbuf) << endl;
    }
    long end = clock();
    cout << endl << "Search time: " << end - beg << " ms" << endl;
 
    delete [] strbuf;
    i_file.close();
 
    return 0;
}