Question

I am sorry for the confusing but here is what i would to be done in C++.

What to expect as output:

1- Report how many lines in the file.

2- How many columns in each row.

3- How many different classes in the file (last column)

4- You should have at least one function in your solution.

5.1	0.222222	3.5	0.625	1.4	0.067797	0.2	0.041667	setosa
4.9	0.166667	3	0.416667	1.4	0.067797	0.2	0.041667	setosa
4.7	0.111111	3.2	0.5	1.3	0.050847	0.2	0.041667	setosa
4.6	0.083333	3.1	0.458333	1.5	0.084746	0.2	0.041667	setosa
5	0.194444	3.6	0.666667	1.4	0.067797	0.2	0.041667	setosa
5.4	0.305556	3.9	0.791667	1.7	0.118644	0.4	0.125	setosa
6.4	0.583333	2.7	0.291667	5.3	0.728814	1.9	0.75	virginica
6.8	0.694444	3	0.416667	5.5	0.762712	2.1	0.833333	virginica
5.7	0.388889	2.5	0.208333	5	0.677966	2	0.791667	virginica
5.8	0.416667	2.8	0.333333	5.1	0.694915	2.4	0.958333	virginica
6.4	0.583333	3.2	0.5	5.3	0.728814	2.3	0.916667	virginica
6.5	0.611111	3	0.416667	5.5	0.762712	1.8	0.708333	virginica
7.7	0.944444	3.8	0.75	6.7	0.966102	2.2	0.875	virginica
4.6	0.083333	3.4	0.583333	1.4	0.067797	0.3	0.083333	setosa
5	0.194444	3.4	0.583333	1.5	0.084746	0.2	0.041667	setosa
4.4	0.027778	2.9	0.375	1.4	0.067797	0.2	0.041667	setosa
4.9	0.166667	3.1	0.458333	1.5	0.084746	0.1	0.01	setosa
6.4	0.583333	2.7	0.291667	5.3	0.728814	1.9	0.75	virginica
6.8	0.694444	3	0.416667	5.5	0.762712	2.1	0.833333	virginica
5.7	0.388889	2.5	0.208333	5	0.677966	2	0.791667	virginica
5.8	0.416667	2.8	0.333333	5.1	0.694915	2.4	0.958333	virginica

Here is the file.

Answer 1

The program is below. Save it file in count_lines.cpp

#include <iostream>
#include <fstream>
using namespace std;

// returns number of words in a str
unsigned count_words(char *str) {
int state = 0;
unsigned wc = 0; // word count
  
// Scan all characters
while (*str)
{
// If next character is a separator, set the flag state
if (*str == ' ' || *str == '\n' || *str == '\t')
state = 0;
  
// If next character is not a word separator increment word count
else if (state == 0){
state = 1;
++wc;
}
// check next character
++str;
}
return wc;
}

void find_column() {
ifstream fin;
   fin.open("file.txt");
   char str[80];
   int count=0;
   while(!fin.eof())
   {
       fin.getline(str,80);
       break;
   }
   fin.close();
   cout << "Column count "<< count_words(str);
}

void count_lines(){
   ifstream fin;
   fin.open("file.txt");
   char str[100];
   int count=0;
   while(!fin.eof())
   {
       fin.getline(str,100);
       count++;
   }
   cout<<"Number of lines in the file is: "<<count<<endl;
   fin.close();
}

int main() {
count_lines();
find_column();
return 0;
}

Output :

Number of lines in the file is 21
Column count 9