std::srand(std::time(nullptr)); // set rand seed v1 = std::rand() % 100; // v1 in the range 0 to 99 v2 = std::rand() % 100 + 1; // v2 in the range 1 to 100 v3 = std::rand() % 30 + 1985; // v3 in the range 1985-2014