Question

write a c++ program that reads some numbers from a text file then it displays how many of these numbers composed of the same digit For example(444 22  232 78 1111) so the program should displays 3 (using only while loops and if statment)

Answer 1

#include <iostream>

#include <fstream>

#include <string.h>

using namespace std;

int main() {

    int count = 0;  // initialize counter

    string num;

    fstream file;

    file.open("data.txt");  // open file

    while(file >> num) {

        int i = num.length() - 1;   // length of num

        bool flag = true;   // set flag true

        while(i != 1) {

            if(num[i] != num[i-1]) {    // check if all digits are same

                flag = false;   // if not set flag false and break the loop

                break;

            }

            i--;

        }

        if(flag) {  // count if all digits are same

            count++;

        }

    }

    cout << count;  // display count

    return 0;

}

data.txt:

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