Simple integration and differentiation in C++

#include <iostream>
using namespace std;
int main()
{
    float a , b , choose;
    cout << "What do want to do??" << endl << "1-integration" << endl << "2-differentiation" << endl << endl ;
    cin >> choose;
    cout << endl;
    if (choose==1)
    {
        cout << "You are going to use integration of X for a form like this:-" << endl << "aX^b" << endl << endl << "Enter the values of a and b" << endl;
        cout << "a=";
        cin >> a;
        cout << "b=";
        cin >> b;
        cout << endl << "---THE RESULT---" << endl;
        cout << a/(b+1) << "X^" << b+1;
    }
    else if (choose==2)
    {
        cout << "You are going to use differentiation of X for a form like this:-" << endl << "aX^b" << endl << endl << "Enter the values of a and b" << endl;
        cout << "a=";
        cin >> a;
        cout << "b=";
        cin >> b;
        cout << endl << "---THE RESULT---" << endl;
        cout << a*b << "X^" << b-1;
    }
}