Question

Write a C++ program that open the text file “numbers.txt”.

(the numbers.txt looks like: ' 1. 6 8 ')

Have a “output.txt”

If summation is less than 5, your code must write last number inside “numbers.txt” in “output.txt”, else it must write the number in between in “output.txt”

(use conditional statement for comparison)

Answer 1

`Hey,

Note: Brother in case of any queries, just comment in box I would be very happy to assist all your queries

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

int main() {
int sum_of_num = 0, fist_num, lst_num, cnt = 0; // summation of the numbers in file initialized to 0
int a; // variable 'a' holds each integer after reading it
ifstream File; // File object creation

File.open("numbers.txt"); // numbers.txt is opened
if (!File) {
cout << "Error opening file";
return 0;
}
freopen("output.txt", "w", stdout);
int i=0;
while (File >> a) { // reading each integer and summing it up
if(i==0){
fist_num = a;
i++;
}
lst_num = a;
sum_of_num = sum_of_num + a;
cnt++;
}

File.close();
if(sum_of_num>10){
cout << fist_num << "\n";
}
else{
if(sum_of_num<5){
cout << lst_num << "\n";
}else{
File.open("numbers.txt");
i = 0;
while (File >> a) { // reading each integer and summing it up
if(i!=0 && i < cnt-1 ){
cout << a << "\n";
}
i++;
}
File.close();
}

}
return 0;
}

Kindly revert for any queries

Thanks.