testing user inputs

RadioactiveDecay/main.cpp

@@ -0,0 +1,26 @@
+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int N(int N0, float t, float t12)
+{
+    return N0 * pow(.5, (t/t12));
+}
+
+int main()
+{
+    float t12;
+    int N0;
+    float t;
+
+    cout << "What's the half-life of your isotope?: ";
+    cin >> t12;
+    cout << "What's the initial population N0?: ";
+    cin >> N0;
+    cout << "What time t do you want to evaluate N(t)? (use same unit of time): ";
+    cin >> t;
+
+    cout << "The population at time " << t << " is " << N(N0, t, t12);
+    return 0;
+}