P66529: Interessos (2) v1

#include <iostream>
using namespace std;

//Programa usant una variable c;

int main() {
    cout.setf(ios::fixed);
    cout.precision(4);
    double i, c, aux;
    string t;
    cin >> i >> t;
    c = aux = 1000;
    if (t == "setmanal") {
        i = i/52;
        for (int j = 52; j != 0; --j) {
        c = c + c*(i/100);
        }
    }else if (t == "mensual") {
        i = i/12;
        for (int j = 12; j != 0; --j) {
        c = c + c*(i/100);
        }
    }else if (t == "trimestral") {
        i = i/4;
        for (int j = 4; j != 0; --j) {
        c = c + c*(i/100);
        }
    }else if (t == "semestral") {
        i = i/2;
        for (int j = 2; j != 0; --j) {
        c = c + c*(i/100);
        }
    }
    cout << 100*(c-aux)/aux << endl;
}