Opening a file and reading in lines of integers

[tcat72]

I am trying to read in a line of integers. The file is like this:

4
3
0 0 1 0
0 1
2 3
3 4
4 0

the first two #s are fine, but lines 3-7 are giving me problems. How can I read each # in line 3 individually and perform some stuff on it, then continue to read the rest of the numbers and doing some stuff to them as well until I reach the end of the line? How can I do the same thing to the remaining lines?

 

[Zyrenthian]

ifstream infile("input.txt&quot

int next_digit;

while(!infile.eof() && infile.peek() != EOF)
{
infile>>next_digit;

... do stuff with next_digit
}

Matt

 

[Ma3x323]

Well, if you want to do something special with each line of numbers and not associate it with the other numbers on the different line, then do this:

// stream from a file
ifstream fin("input.txt"
// store the entire line in a string
string line;
// store the number
int number;

// grabs one line of the file
while(getline(fin, line))
{
// so you will be able to take care one line at a time
// until it reaches the end of the line
istringstream temp(line);

// stream from the line and put the number in
temp >> number;

// ... do stuff with the number
} -Feryl
--> Just a silly software engineer wannabee.
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