Typing Game!

#include <iostream>
#include <windows.h>
#include <chrono>

using namespace std;

int main()
{
    string text;
    string quote="Perhaps if you know you are insane then you are not insane.";
    float wordCount=1;
    for(int c=0;c<quote.length();c++)if(quote[c]==' '&&quote[c+1]!=' ')wordCount++;
    cout<<quote<<endl;
    for(int c=3;c>0;c--)
    {
        cout<<c;
        Sleep(1000);
        system("cls");
        cout<<quote<<endl;
    }
    auto start=chrono::high_resolution_clock::now();
    getline(cin,text);
    auto finish=chrono::high_resolution_clock::now();
    chrono::duration<double>elapsed=finish-start;
    float time=elapsed.count();
    bool acc=false;
    if(text==quote)acc=true;
    if(acc==true)
    {
        float wpm=(wordCount/time)*60;
        float cpm=wpm*5;
        cout<<"Your time was: ";
        printf("%.2f",time);
        cout<<" seconds."<<endl;
        cout<<"That's ";
        printf("%.0f",wpm);
        cout<<" words per minute! (";
        printf("%.0f",cpm);
        cout<<" CPM).";
    }
    if(acc==false)cout<<"You made a mistake. Restart the program and try again.";
}