Calculation on text-file ?

This may be an extension to the above linked post :)

http://www.c-sharpcorner.com/Forums/Thread/237449/counting-characters-digits-text-file.aspx

My questions would be . . what if text-file , we are getting and reading content caries i.e

Scenario 1 : program that will read all the integer numbers and find the smallest, the largest, the sum, and the average values. Sort all numbers read in ascending order and output all results into another file name.

scenario 2 : program that reads the matrix from the text and output the average value of each row and column, smallest and the biggest number of each row/column. Smallest and biggest number of the whole matrix and the average value of the whole matrix to a text file.

Well input to this is : @in text-file

60 57 94 8 95 68 13 30 6 62 42 65 82 52 67

21  95  12  71  1  90  31  38  57  16  90  40  79  35  6  
72  98  95  19  54  23  89  60  5  26  23  6  13  70  38

Cheers Ty for help

OK, here's some code for scenario 1:

#include

using namespace std;

int main()

{

vector vec;

ifstream inFile;

ofstream outFile;

string inFilename;

string outFilename = "results.txt";

string number;

cout << "Enter the name of the .txt file to be analyzed : ";

cin >> inFilename;

cout << endl;

inFile.open(inFilename.c_str());

if(inFile.fail())

{

cout << "Unable to find file " << endl;

inFile.close();

return 1;

}

while(!inFile.eof())

{

getline(inFile, number, ' ');

if(number.length() == 0 || number == "\n") continue;

int i = atoi(number.c_str());

vec.push_back(i);

}

inFile.close();

int min = vec[0];

int max = vec[0];

int sum = 0;

for(int i = 1; i < vec.size(); i++)

{

if (vec[i] < min) min = vec[i];

if (vec[i] > max) max = vec[i];

sum += vec[i];

}

double average = (double)sum/vec.size();

outFile.open(outFilename, ofstream::out);

outFile << "Smallest is " << min << endl;

outFile << "Largest is " << max << endl;

outFile << "Sum is " << sum << endl;

outFile << "Average is " << average << endl;

sort(vec.begin(), vec.end());

// write them to a line on separate lines

outFile << endl << "The sorted numbers are" << endl << endl;

for(int i = 0; i < vec.size(); i++) outFile << vec[i] << endl;

outFile.close();

return 0;

}

See if you can figure out how to deal with scenario 2 now.

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Vulpes13y ago
Accepted answer
OK, here's some code for scenario 1:

#include
#include
#include
#include
#include

using namespace std;

int main()
{
vector vec;

ifstream inFile;
ofstream outFile;
string inFilename;
string outFilename = "results.txt";
string number;

cout << "Enter the name of the .txt file to be analyzed : ";
cin >> inFilename;
cout << endl;

inFile.open(inFilename.c_str());

if(inFile.fail())
{
cout << "Unable to find file " << endl;
inFile.close();
return 1;
}

while(!inFile.eof())
{
getline(inFile, number, ' ');
if(number.length() == 0 || number == "\n") continue;
int i = atoi(number.c_str());
vec.push_back(i);
}

inFile.close();

int min = vec[0];
int max = vec[0];
int sum = 0;

for(int i = 1; i < vec.size(); i++)
{
if (vec[i] < min) min = vec[i];
if (vec[i] > max) max = vec[i];
sum += vec[i];
}

double average = (double)sum/vec.size();

outFile.open(outFilename, ofstream::out);
outFile << "Smallest is " << min << endl;
outFile << "Largest is " << max << endl;
outFile << "Sum is " << sum << endl;
outFile << "Average is " << average << endl;

sort(vec.begin(), vec.end());
// write them to a line on separate lines
outFile << endl << "The sorted numbers are" << endl << endl;
for(int i = 0; i < vec.size(); i++) outFile << vec[i] << endl;

outFile.close();
return 0;
}

See if you can figure out how to deal with scenario 2 now.