interating avg

main.cpp

@@ -1,4 +1,5 @@
 #include <iostream>
+#include <list>
 #include <iomanip>
 
 using string = std::string;
@@ -15,66 +16,24 @@ void printlm(T m){
   printm("\n");
 }
 
-class Heap {
-  int pos {0};
-  int length {0};
-  int size;
-  int* storage;
-public:
-  Heap(int sz) {
-    size = sz;
-    storage = new int[sz];
-  }
-  ~Heap() {
-    delete[] storage;
-  }
-  bool isEmpty() {
-    return length == 0;
-  }
-  void add(int item) {
-    if (length + 1 > size) return;
-    pos = length;
-    while (pos > 0 && storage[(pos-1)/2] < item) {
-      storage[pos] = storage[(pos-1)/2];
-      pos = (pos-1)/2;
-    }
-    storage[pos] = item;
-    ++length;
-  }
-  int extractMax() {
-    int max {storage[0]};
-    storage[0] = storage[--length];
-    int first {0};
-    while ((2*first)+1 <= length - 1) {
-      int largest {(2*first)+1};
-      if ((2*first)+2 <= length - 1 && storage[largest] < storage[(2*first)+2]) largest = (2*first)+2;
-      if (storage[first] >= storage[largest]) break;
-      int swap = storage[first];
-      storage[first] = storage[largest];
-      storage[largest] = swap;
-      first = largest;
-    }
-    return max;
-  }
-};
-
 int prompti(string,bool*);
+double promptd(string,bool*);
+double avgitr(std::list<double>*);
+double avgfor(std::list<double>*);
+
 
 int main() {
-  printlm("Create Heap:");
-  Heap h{16};
+  printlm("Average of:");
   bool s {};
-  int i {0};
+  std::list<double> lst {};
   do {
-    auto d = prompti("Enter a number: ",&s);
-    if (s) {
-      h.add(d);
-      ++i;
-    }
-  }
-  while(s && i < 16);
-  printlm("Output Heap:");
-  while (!h.isEmpty()) printlm(h.extractMax());
+    auto v = promptd("Enter a double value: ", &s);
+    if (s) lst.push_back(v);
+  } while (s);
+  printm("avgitr: ");
+  printlm(avgitr(&lst));
+  printm("avgfor: ");
+  printlm(avgfor(&lst));
   return 0;
 }
 
@@ -91,3 +50,27 @@ int prompti(string message, bool *status) {
   return tr;
 }
 
+double promptd(string message, bool *status) {
+  double tr {};
+  *status = false;
+  std::cout << message;
+  if (!(std::cin >> tr)){
+    std::cin.clear();
+    std::cin.ignore();
+    return 0.0;
+  }
+  *status = true;
+  return tr;
+}
+
+double avgitr(std::list<double> *values) {
+  double sum {};
+  for (auto itr = values->cbegin(); itr != values->cend(); ++itr) sum += *itr;
+  return sum / values->size();
+}
+
+double avgfor(std::list<double> *values) {
+  double sum {};
+  for (auto c : *values) sum += c;
+  return sum / values->size();
+}