scientific notation problem

chofs (49)
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hey guys I have slight problem in my scientific notation output my exponent is displaying 3digits and I want it to display 2 digits 4 example instead of outputting 3.00e+006 I want it to output 3.00e+06.....any help wud be appriciated 

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 #include <iostream>
#include<vector>
#include<fstream>
#include<iomanip>


using namespace std;
void getValuesFromFile(vector<float>&R1,vector<float>&R2,vector<float>&R3)
{
    float r1=0;
    float r2=0;
    float r3=0;
    ifstream infile("indata.txt");

    while(infile>>r1>>r2>>r3)
    {
        R1.push_back(r1);

        R2.push_back(r2);
        R3.push_back(r3);
    }
}

void calculate(vector<float>R1,vector<float>R2,vector<float>R3)
{
    float Ra=0.0;
    float Rb=0.0;
    float Rc=0.0;
    float Rd=0.0;

    for(int i=0;i<R1.size();i++)
    {
        Ra=R1[i]+R2[i]+R3[i];

        Rb=(R1[i]*R2[i]*R3[i])/(R1[i]*R2[i]+R2[i]*R3[i]+R3[i]*R1[i]);

        Rc=R1[i]+(R2[i]*R3[i])/(R2[i]+R3[i]);

        Rd=((R1[i]+R2[i])*R3[i])/(R1[i]+R2[i]+R3[i]);

        cout<<setprecision(2)<<scientific<<Rb<<"  "<<Rd<<"  "<<Rc<<"  "<<Ra<<endl;
    }

}

int main()
{
    vector<float> R1;
    vector<float>R2;
    vector<float> R3;

    getValuesFromFile(R1,R2,R3);
    calculate(R1,R2,R3);

    return 0;


}
RabMac (80)
Try putting this line in line 41 of your code, just before the cout statement:

 
 
cout << std::fixed;
cronopio (95)
Try using the printf function....

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...
    float x = 4.5695;    
    printf("%.2lf\n", x);
...
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