cpp 3.8

3.8

#include <iostream>int main(){using namespace std;cout.setf(ios_base::fixed, ios_base::floatfield);float tub = 10.0 / 3.0;double mint = 10.0 / 3.0;const float million = 1.0e6;cout << "tub = " << tub;cout << ", a million tubs = " << million * tub;cout << ",\nand ten million tubs = ";cout << 10 * million * tub << endl;cout << "mint = " << mint << " and a million mints = ";cout << million * mint << endl;system("pause");return 0;}

3.9

#include <iostream>int main(){using namespace std;float a = 2.34E+22f;float b = a + 1.0f;cout << "a = " << a << endl;cout << "b - a = " << b - a << endl;system("pause");return 0;}