add lab3 solution

labs/debugging/point.cpp

@@ -20,6 +20,6 @@ double compute_slope(const Point &a, const Point &b) {
   double run_x = b.get_x() - a.get_x();
   double run_z = b.get_z() - a.get_z();
   double run = sqrt(run_x*run_x + run_z*run_z);
-  //double answer = rise / run;
+  double answer = rise / run;
   return rise / run;
 }

labs/memory_debugging/buggy_lab.cpp

@@ -44,10 +44,10 @@ void identifyMeanAndMin(const std::string& filename) {
    float* avg;
 
    /** PART 1: ADD CODE BELOW **/
-
-
-
-
+   numElements = new int;
+   sum = new int;
+   smallestNum = new int;
+   avg = new float;
    /** PART 1: ADD CODE ABOVE **/
 
    *numElements = 0;
@@ -66,10 +66,11 @@ void identifyMeanAndMin(const std::string& filename) {
 
    /** PART 2: MODIFY CODE BELOW **/
 
-   for (int i = MAX_ARRAY_SIZE; i >= -1; i--) {
+   for (int i = *numElements - 1; i >= 0; i--) {
        // If we're at the beginning of the for loop, initalize *smallestNum
        // Else, compare *smallestNum to current element in the for loop
-       if (i == MAX_ARRAY_SIZE) {
+
+       if (i == *numElements - 1) {
            *smallestNum = *(intArray + i);
        }
 
@@ -98,7 +99,11 @@ void identifyMeanAndMin(const std::string& filename) {
 
    /** PART 3: ADD AND/OR MODIFY CODE BELOW **/
 
-   delete intArray;
+   delete[] intArray;
+   delete numElements;
+   delete sum;
+   delete avg;
+   delete smallestNum;
 
    /** PART 3: ADD AND/OR MODIFY CODE ABOVE **/
 }