Question

Question 3 (2 points) Suppose, you have a file called 'numbers.txt' where each line of the file contains a number. The number in each line can be a positive or a negative number. Write a program that will find the average of all the numbers between 0 to 1000 (including 1000). Your file may look like the following: 10 25 -5 1001 10 Sample output: The average is 15 o Нt

Answer 1

Answer:

I have done this program in both C and C++ Programming Language

CODE: C Programming Language

#include<stdio.h>
int main(){
    int n, sum = 0, count = 0;
    FILE *fp;
    fp= fopen("numbers.txt", "r"); // reading text file
    //the sum part
    // reading the integers from file
    while( EOF != fscanf(fp, "%i", &n)){
       if(n > 0 && n <= 1000){
           sum = sum + n; // Incrementing the sum between the values 0 to 1000(including)
           count++;   // Incrementing count
       }          
    }
    printf("The Average is :%d", sum/count); // Printing the average
    fclose(fp);
    return 0;
}

SCREENSHOT OF THE CODE:

1 #include<stdio.h> 2 int main() { 3 int n, sum = @, count = ; 4 FILE *fp; 5 fp= fopen("numbers.txt", "r"); // reading text file 6 //the sum part // reading the integers from file 8 while( EOF != fscanf(fp,"%i", &n)){ if(n > 0 && n <= 1000){ 10 sum = sum + n; // Incrementing the sum between the values o to 1000(including) 11 count++; // Incrementing count 12 13 14 printf("The Average is :%d", sum/count); // Printing the average 15 fclose(fp); 16 return; 17 9 } }

INPUT:

numbers.txt

numbers - Notepad File Edit Format View Help 10 25 -5 1001 10

OUTPUT:

C:\Users\Eswar\Desktop\newg++ open average.exe The Average is :15 Process exited after 0.1856 seconds with return value o Press any key to continue

===========================================================================

CODE: C++ Programming Language

#include <iostream>
#include <fstream>
using namespace std;
int main(){
    fstream fp; // declare a file
    fp.open("numbers.txt", ios::in); // open the file
    int sum = 0;
    int count = 0;
    string line;
    while (getline(fp, line)){ //reading a line from the file while possible
        if(stoi(line) > 0 && stoi(line) <= 1000){
            sum = sum + stoi(line); // convert string to number and add it to the sum
            count ++;
       }  
    }
    // closing the file
    cout << "The average is: " << sum / count; // print the sum
    cin.get();
    fp.close();
    return 0;
}

SCREENSHOT OF THE CODE:

1 #include <iostream> 2 #include <fstream> 3 using namespace std; 4 int main() { 5 fstream fp; // declare a file 6 fp.open("numbers.txt", ios::in); // open the file 7 int sum = @j 8 int count = @; 9 string line; 10 while (getline (fp, line)){ //reading a line from the file while possible if(stoi(line) > 0 && stoi(line) <= 1000) { 12 sum = sum + stoi(line); // convert string to number and add it to the sum 13 count ++; 14 15 } 16 // closing the file 17 cout << "The average is: << sum / count; // print the sum 18 cin.get(); 19 fp.close(); 20 return; 21 UL. 11 نہا بہ

INPUT:

numbers.txt

numbers - Notepad File Edit Format View Help 10 25 -5 1001 10

OUTPUT:

C:\Users\Eswar\Desktop\newg++ open average.exe The Average is :15 Process exited after 0.1856 seconds with return value o Press any key to continue

Thank you. Please ask me if you have any doubt.