Challenge problem: Where are the two errors???

Thankee very much!Code://Homework 18.4 //Benjamin Stollerman //CS 1050 #include <iostream.h> #include <fstream.h> #include <iomanip.h> using namespace std; int main() { //Define and initialize variables and 2D array double lake[5][12]; double num_years[5]; double average[5]; double num=0; //Attach object name fstream powell_data; // Associate object name to a file powell_data.open("lake_powell.dat",ios::in); /*Part A- Calculate the average elevation of the water level for each year and for 5 year period*/ for(int k=0; k<12; k++) //for loop { for(int j=0; j<5; j++) powell_data>>lake_data[j][k]; //read in the data from above } for(int k=0; k<5;k++) { num_years[k] = 0; for(int j=0; j<12; j++) num_years[k] = lake[k][j]+1; num += num_years[k]; } for(int k=0; k<5; k++) { average[k]=0; for(int j=0; j<12; j++) { if(lake[k][j] > (num_years[k]/12)) average[k] = average[k]+1; } cout<<"In "<<k+2000<<"The average elevation was: "<<(num_years[k]/12)<<endl; cout<<"There were "<<average[k]<<" months above average"<<endl; } cout<<"The 5-year average elevation was: "<<(total/60)<<endl; return 0; }