Odtnhj

I'm trying to open a file and save the information there in an array of chars, however I'm not getting it. To save in a string use this:

int main()
string line1;
ifstream myfile;
myfile.open("example.txt");

if(!myfile)
 cout<<"Unable to open the file."<<endl;
 exit(0);

while(getline(myfile,line1))
 ReadFile(myfile);

And It works.
When I use an array of chars, I code like this:

int main()
int size=100;
char line1[size];
ifstream myfile;
myfile.open("example.txt");

if(!myfile)
 cout<<"Unable to open the file."<<endl;
 exit(0);

while(myfile.peek()!EOF)
 line1[size]->ReadFile();

The function ReadFile is this:

void ReadFile(ifstream &is)
 char aux[100];
 is.getline(aux,100);

To read in an array of characters, or text, you can use std::getline and std::string:

std::string text;
std::getline(myfile, text);

To process text lines in a file:

std::string text;
while (std::getline(myfile, text))

 Process_Text(text);

Don't use arrays of characters, as they can overflow. Also, instead of using == to compare, you'll have to use strcmp. Always verify that your array of characters is terminated by a nul character, '', otherwise the string functions will go beyond your array, not stopping until a nul is found.

Edit 1: Space separated

To read in text that is space separated, use:

std::string text;
myfile >> text;

Edit 2: Counting characters in a string

You can count characters in a string by using another array.

unsigned int frequency[128] = 0; // Let's assume ASCII, one slot for each character.
// ... read in string
const size_t length(text.length());
for (size_t index = 0; index < length; ++index)

 const char letter = text[index];
 ++frequency[letter];