Nếu lãi mẹ có đẻ lãi con thì
#include <iostream>
using namespace std;
int main (){
int tien, thang;
float lai;
cout <<"So tien ban da gui(d): ";
cin >>tien;
cout <<"So thang gui tien: ";
cin >>thang;
cout <<"Voi lai suat(%): ";
cin >>lai;
float...