/**
* Attempts to subtract one R from another.
* Returns an optional as it can fail if it would result in negative size elements.
* @param other The other R.
* @return this - other
*/
R subtract(const R& other)
{
int newN = n - other.n;
std::array<int,dims> newValues = subtractValues(values,other.values);
if (isValidValues(newN,newValues))
return R(newN,newValues);
else
throw "Invalid subtractions";
}
int main() {
//Declares all of the arrays that are to be used
char inFileName[MAXFILENAMELENGTH];
char outFileName[MAXFILENAMELENGTH];
int fileContents[NUMINTSINFILE];
int addedContents[NUMINTSAFTERADDITION];
int subtractedContents[NUMINTSAFTERSUBTRACTION];
//Initializes the arrays to 0s
initializeArray(addedContents, NUMINTSAFTERADDITION);
initializeArray(fileContents, NUMINTSINFILE);
initializeArray(subtractedContents, NUMINTSAFTERSUBTRACTION);
//Declares the file streams to be used
ifstream inFile;
ofstream outFile;
//Gets the input file name
cout << "Please enter the file name to open: ";
cin >> inFileName;
//Gets the output file name
cout << "Please enter the file name to write to: ";
cin >> outFileName;
//Reads in the values from the input file name to the input values array
inFile.open(inFileName);
if (!inFile.fail()) {
cout << "Input file found." << endl;
getIntValues(fileContents, NUMINTSINFILE, inFile);
toScreen(fileContents, NUMINTSINFILE);
}
else {
cout << "Input file not found. Ending program." << endl;
return 1;
}
//Adds the values per instruction into another array
addValues(fileContents, addedContents, NUMINTSINFILE, NUMINTSAFTERADDITION);
//Subtracts the values per instruction into another array
subtractValues(fileContents, subtractedContents, NUMINTSINFILE, NUMINTSAFTERSUBTRACTION);
//Outputs the added and subtracted values to the output file name
outFile.open(outFileName);
if (!outFile.fail()) {
cout << "Output file found." << endl;
toScreen(addedContents, NUMINTSAFTERADDITION);
toScreen(subtractedContents, NUMINTSAFTERSUBTRACTION);
outFile << "Added values: " << endl;
for (int i = 0; i < NUMINTSAFTERADDITION; i++) {
outFile << addedContents[i] << " ";
}
outFile << "\nSubtracted values: " << endl;
for (int i = 0; i < NUMINTSAFTERSUBTRACTION; i++) {
outFile << subtractedContents[i] << " ";
}
}
else {
cout << "Output file not found. Ending program." << endl;
return 1;
}
//Closes the file streams as to clean up system
inFile.close();
outFile.close();
return 0;
}
