MULTIPLICATIONS: PETIT EXERCICE DE MATHS

#include <iostream>
#include <ctime>
#include <windows.h>
#include <cmath>
#include <string>
#include <string>
using namespace std;
static SYSTEMTIME st;


double temps (float temps_debut)
{
GetSystemTime(&st);
float secondes = st.wHour*3600 + st.wMinute*60 + st.wSecond;
if (temps_debut < 0) //c'est le début du "chronomètre)
{return secondes;}
else //c'est la fin du chronomètre
{return secondes - temps_debut;}    
    
}    

int random (int min, int max)
{       
int random_integer;
for(int index=0; index<20; index++)
{random_integer = (rand()%max)+min;}
return random_integer;
} 

void intro (int time, int nombre_de_multiplications, int level)
{ cout << "Dans " << time << " secondes, "<< nombre_de_multiplications << " multiplications a la difficulte " << level << " te seront posees auquelles \n";
cout << "tu doit repondre sans te tromper et le plus vite possible\nBonne chance!\n";
Sleep (1000*time);
cout << "\t\t\t\t  Temps pris  Erreur(s)  Gain/Perte    Total" <<endl;
}




int main(int argc, char *argv[])
{
srand ((unsigned)time(0));
bool fastmode;
string mode;
double answer=0, total =0, diff, a, b, erreur, conteur=0;
int level, x=0, vitesse,ndm;
string gain_perte, continuer;



while (x!=1){
cout << "modes\n1. rapide\n2. long\n3. court\n4. normal\n5. dur\n6. personalise\nmode ";
cin >> mode; 
if (mode=="rapide" || mode =="1")
{intro(1,10,1);x=1; level=1;ndm=10;vitesse=0;}

if (mode=="long" || mode =="2")
{intro(5,10,1);x=1; level=1;ndm=25;vitesse=1;}

if (mode=="court"|| mode =="3")
{intro(5,10,1);x=1; level=1;ndm=4;vitesse=1;}

if (mode=="normal"|| mode =="4")
{intro(5,10,1);x=1; level=1;ndm=10;vitesse=1;}

if (mode=="dur"|| mode =="5")
{intro(5,10,2);x=1; level=2;ndm=10;vitesse=1;}

if (mode=="personalise"|| mode =="6")
{cout << "vitesse(s): ";
cin >> vitesse;
cout << "nombre de multiplications: ";
cin >> ndm;
cout << "niveau(1-3 conseille): ";
cin >> level;                                             
intro(vitesse,ndm,level);x=1;}

}


  
while (continuer != "non" && conteur<ndm)
{
double chrono = temps(-1);
a=random(-3 + 4*level,8+2*level), b=random(-3 + 4*level,8+2*level), erreur=-1;





while (a*b != answer){
cout << a << "x" << b << "=";
cin >> answer;
erreur++;}


chrono = temps(chrono);
diff = (5*level-chrono-2*erreur)/2;
total = total + diff;

if (chrono<0) {gain_perte = "\t Perte:";}
if (chrono>0) {gain_perte = "\t Gain: ";}
if (chrono==0) {gain_perte = "\t       ";}

cout << "\t\t\t\t\t" << chrono; 
cout << "s\t " << erreur; 
cout << gain_perte << sqrt(diff*diff)  <<"   Total: " << total <<endl;    

conteur++;
answer = 0;    
Sleep(1000*vitesse);
}    

cout << "\n\nTotal: " << total << " / " << ndm*2 << "\n" ;   
system ("pause");    
return 0;    
}