CODEWITHSUNDEEP
c++arraysfunctionfile-iofstream
user2220235
user2220235

Reputation: 3

C++ count digits and characters

I'm pretty new to C++ and I need to write a program that can count number of digits, characters, space symbols and other symbols. I decided to start with counting the number of digits. This is my code so far:

 int main() {
     int n = 0;
     int numb = 0;

     ifstream read("Data.txt");

     n = symbCounter(n, read);
     numb = numbCounter(n, read, numb);
     cout << numb; // this is for quick testing

     return 0;
 }

 int symbCounter(int &n, ifstream &read) {

     char ch;
     while (!read.eof()) {
         read.get(ch);
         n++;

     }
     return n;

 }

 int numbCounter(int &n, ifstream &read, int counter) {

     char sk[n];

     for (int i = 0; i < n; i++) {
         read.get(sk[i]);
         if (sk[i] == '1' || sk[i] == '2' || sk[i] == '3' || sk[i] == '4' || sk[i] == '5' || sk[i] == '6' || sk[i] == '7' || sk[i] == '8' || sk[i] == '9' || sk[i] == '0')
             counter++;
     };

     return counter;
 }

But the console gives me the value 0. What am I doing wrong? And how do I count just characters, excluding digits or spaces? Thanks in advance.

Upvotes: 0

Views: 1127

Answers (3)

sinanislekdemir
sinanislekdemir

Reputation: 1

You need to return the the beginning of the file for numCounter; right after 

int numbCounter(int &n, ifstream &read, int counter) {

add

read.clear();
read.seekg(0, ios::beg);

Upvotes: 0

Johnny Mnemonic
Johnny Mnemonic

Reputation: 3912

You can use the functions defined in the <cctype> header like

isalpha()
isblank()
iscntrl()
isdigit()
isspace()

and others to check for specific types of characters. See this for example.

Upvotes: 3

Matthew T. Staebler
Matthew T. Staebler

Reputation: 4996

In your symbCounter method, you read through the file to the end. When you try to read from the file in your numbCounter method, the calls to read will return EOF since you are at the end of the file. You can return to the beginning by calling

read.seekg(0);

Upvotes: 1

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