chance assignment of random

Hi, I need to be pointed towards the correct way to express,
a greater percent chance of something happending.
For example:

a and b are playing cards and a has a 60% chance of winning.
and the wins are generated by rand.(got that part) it's just
the percentages
Thanks
Michele

Code:

---

#include<iostream>
#include<cstdlib>
#include<ctime>
#include<iomanip>
#include<iostream>
#include<fstream>
using namespace std;


//function prototype
int pp (int&);
int score = 0;

void main()
{

ofstream outfile("A:\\0F1017_6_2.txt");
if(!outfile){
cerr << "Cannot open output file" << endl;

}

srand((unsigned) time(0));
int a = 0(.56);
int b = 0(.44);
int aa = 0;
int bb = 0;
............................
//my function is:
        int pp (int &score)                  //function pp
                        {score = ( rand() % 2);
                        return score;}

---

i thought that by assigning them to the initialization of the int of each it would work, but i cannot tell if it is...is it?
should i be expressing the chances in the random expression of the function?
thanks Michele/scuba22

Integers are integers, so you can't store decimal numbers in them (like 0.44).
Use a range from 0-100 instead.

so
something like:

Code:

---

int a = 0(1-56);
int b = 0(57-100);

---

???

I have no idea what 0(12345) does.

This calculates a random percentage in the range 1-100, and checks if Player1 or Player2 wins.

Code:

---

int GetPercent()
{
  return ((rand() % 100) + 1);
}

int main()
{
  srand(time(NULL));
  int Result = GetPercent();

  if(Result <= 56)
  {
      cout << "Player 1 wins!" << endl;
  }
  else
  {
      cout << "Player 2 wins!" << endl;
  }

  return 0;
}

---

PS: Notice the int main() :)

<edit>
Are you aware that you include unneccessary headers, and one is included twice?
</edit>

hi, i didn't realize iostream was in there twice...i'm not sure what isn't necessary though?

#include<iostream> is this the unecessary?
#include<cstdlib> needed for rand fx
#include<ctime> for my time seed
#include<iomanip> for my setw()
#include<fstream> and for my outfile.....(that's my ultimate goal to print to a file)
____________________________
i don't understand your explanation...
what i need to do is write a program for 3 "games" to be won at a score of 11.
Player A has a 56% chance of winning, player B has a 44% chance.
here is the entire thing..maybe you can point to how i can encorporate your method into my loops or function.
Sorry if I am dense, I am 6 weeks into C++ :-D.
Thx
Michele

Code:

---

//Michele DAddio CS210
//10_17_02::HW #6 : RANDOM

#include<iostream>
#include<cstdlib>
#include<ctime>
#include<iomanip>
#include<fstream>
using namespace std;


                //function prototype
                        int pp (int&);
                       

                int main()
                {

                        ofstream outfile("A:\\0F1017_6_2.txt");
                        if(!outfile){
                                cerr << "Cannot open output file" << endl;
                         
                }
       
                        srand((unsigned) time(0));
                        int a = 0(1-56);
                        int b = 0(57-100);
                        int aa = 0;
                        int bb = 0;
                        int score = 0;
               
                for (int pg=0; pg < 3;pg++){

                        outfile << "\t\t\n Game " << pg +1 << endl;

                bool zz = true;       
                if (zz == true){
                outfile << setw(11) << "\n\tAda" << setw(16) << "Blaise" << endl;
                bool zz = false;}


                for ( int c = 0; c <= 22; c++) {
                       
                        score = pp(score);
                        if (score == 1){
                                outfile << setw (20) << a+1 <<setw(15)<< "0" << endl;
                                a++;
                                aa++;}
                        else {
                                outfile << setw (20)<< "0"<< setw(15) << b+1 << endl;
                                b++;
                                bb++;}


                        if (a == 11){
                                outfile << setw(10) << "\tAda won 11 to " << b << endl;
                        a = 0;
                        b = 0;
                        break;}
                        else if (b == 11){
                                outfile << setw(10) << "\tBlaise won 11 to " << a << endl;
                        a = 0;
                        b = 0;
                        break;}
                               
                        }
                }
                               
                        outfile <<"\t\t\n";
                        if ( aa > bb ){
                                outfile << "Ada is the overall winner\n";}
                        else {outfile << "Blaise is the overall winner\n";}

                        return 0;

        }

                        int pp (int &score)                  //function pp
                        {score = ( rand() % 2);
                        return score;}

---

&#91;code]&#91;/code]tagged by Salem