Here is how your code should look. clang-format fixed it up.
#include <iostream>#include <string>using namespace std;class employee {protected: string name; string surname; int tel; int nbureau;public: employee(string n, string s, int t, int b) { name = n; surname = s; tel = t; nbureau = b; } void affich() { cout << "nom" << name << "\nprenom" << surname << "\nnumero tel" << tel<< "\nnumero bureau" << nbureau; }};class monthly : public employee {private: double salary; int nbc; double tcom;public: monthly(string n, string s, int t, int b, double sl, int nc, double tc)::employee(n, s, t, b) { salary = sl; nbc = nc; tcom = tc; } void affich() { cout << "nom" << employee.name << "\nprenom" << employee.surname<< "\nnumero tel" << employee.tel << "\nnumero bureau"<< employee.nbureau << "\nsalaire" << salary<< "\nnombre de commissions" << nbc << "\ntaux de commission" << tc; } double salary() { return salary + (nbc * tcom); }};And this is a version with the syntax fixed up:
#include <iostream>#include <string>using namespace std;class employee {protected: string name; string surname; int tel; int nbureau;public: employee(string n, string s, int t, int b) : name(n), surname(s), tel(t), nbureau(b) {} void affich() { cout << "nom" << name << "\nprenom" << surname << "\nnumero tel" << tel<< "\nnumero bureau" << nbureau; }};class monthly : public employee {private: double salary; int nbc; double tcom;public: monthly(string n, string s, int t, int b, double sl, int nc, double tc) : employee(n, s, t, b), salary(sl), nbc(nc), tcom(tc) {} void affich() { cout << "nom" << name << "\nprenom" << surname << "\nnumero tel" << tel<< "\nnumero bureau" << nbureau << "\nsalaire" << salary<< "\nnombre de commissions" << nbc << "\ntaux de commission" << tcom; } double get_salary() { return salary + (nbc * tcom); }};