fist commit double and float of problem 2.25

eps.cpp

+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int main()
+{
+
+double i, ismall;
+i = 1.0, ismall = 1.0+i;
+while( ismall != 1.0) {
+i = i/2.0;
+ismall = 1.0 + i;
+}
+
+cout << i << endl;
+return 0;
+}

epsfloat.cpp

+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int main()
+{
+
+float i, ismall;
+i = 1.0, ismall = 1.0+i;
+while( ismall != 1.0) {
+i = i/2.0;
+ismall = 1.0 + i;
+}
+
+cout << i << endl;
+return 0;
+}