it's friday

Lab2/row.cpp

@@ -43,16 +43,18 @@ Row::~Row(){
 
 // access operator (const)
 double Row::operator[](unsigned int column) const{
-	//finish
+	if (column >= length) {
-	double result;
+		throw(out_of_range("Column is out of range"));
-	return result;
+	}
+	return row_data[column];
 }
 
 // access operator (non-const)
 double& Row::operator[](unsigned int column){
-	//finish
+	if (column >= length) {
-	double result;
+		throw(out_of_range("Column is out of range"));
-	return result;
+	}
+	return row_data[column];
 }
 
 // assignment operator

Lecture/Week2/dog.cpp

@@ -58,6 +58,11 @@ char& Dog::operator[](int index){
     return name[index];
 }
 
+Dog Dog::puppy(int namelength, char * name){
+    Dog p(0, namelength, name);
+    return p;
+}
+
 ostream& operator<<(ostream& os, const Dog& d){
     for(int i = 0; i< d.namelength; i++) {
         os << d[i];

Lecture/Week2/dog.h

@@ -3,6 +3,8 @@ using namespace std;
 class Dog {
     public:
     Dog(int age, int namelength, char * name);
+    // has to be dog object, not reference
+    static Dog Dog::puppy(int namelength, char *name);
     Dog(const Dog& from);
     ~Dog();
     Dog& operator=(const Dog& rhs);