I have a .txt file in my project directory that I made and populated with data.
directory structure looks like:
/Users/asd/ClionProjects/ProjectWithTemplates/
main.cpp
cmake
twoday.txt
here is my code:
#include <iostream>
#include <array>
#include <cmath>
#include <fstream>
using namespace std;
/* print array prototype */
template <size_t N>
void printArray(const array<double , N> & arr);
/* mean function prototype */
template <size_t N>
double meanArray(const array<double , N> & arr);
/* standard deviation prototype */
template <size_t N>
double sDeviation(const array<double , N> & arr);
int main() {
string date1;
string date2;
array<double, 24> day1Temps;
array<double, 24> day2Temps;
array<double, 3> testarr = {75,70,65};
/* TESTING PURPOSES */
printArray(testarr);
sDeviation(testarr);
cout << "standard deviation of array is: " << sDeviation(testarr) << endl;
cout << "mean of array is: " << meanArray(testarr) << endl;
/* END TESTING */
ifstream inputFile;
inputFile.open("twoday.txt");
if(inputFile.is_open())
{
inputFile >> date1;
inputFile >> date2;
for(int i = 1; i < day1Temps.size(); ++i)
{
inputFile >> day1Temps[i];
}
for (int j = 1; j < day2Temps.size(); ++j) {
inputFile >> day2Temps[j];
}
} else cout << "File unable to open. File does not exist." << endl;
return 0;
}
/* print array defination */
template <size_t N>
void printArray(const array<double , N> & arr){
for(const auto & i : arr)
{
cout << i << " ";
}
cout << endl;
}
/* mean function defination */
template <size_t N>
double meanArray(const array<double , N> & arr){
double sum;
for (const auto & i : arr) {
sum+=i;
}
return sum/arr.size();
}
/* standard deviation defination */
template <size_t N>
double sDeviation(const array<double , N> & arr){
double mean = meanArray(arr);
double total;
for (const auto & i : arr){
total+=pow(i - mean, 2);
}
return sqrt(total/arr.size());
}
Eveything else works fine besides my file IO. Very strange.
adding some details..............more details? :(
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