420468 2512078.qx3zay7 Consider a comma-separated file that contains student names and scores such as the following: Jane Lee, 100, 98, 97, 100 Aaron X. Schmidt, 37, 42, 49, 54 Frank von Tardy, 2, 3, 10, 7 We can read the file one line at a time and use an istringstream object to process the scores. To get the position of the first comma, simply read words from the input stream until the word ends with a comma. Then, read and sum the numbers remaining on the line. Use get to remove the commas following each number. Rearrange the lines below to compute the total score for a single student. Assume that each student has at least one score. Mouse: Drag/drop Keyboard: Grab/release [Spacebar (or Enter). Move 100. Cancel Esc Unused total total + score; while (getline(in_file, line)) in.str(line); in >> word; char ch; in.get(ch); in >> word; while (word [word.size()-1] != ',') total = 0; while (in >> score) istringstream in; } } main.cpp #include #include #include using namespace std; int main() { ifstream in file; in_file.open("scores.txt"); string line; int total; int score; string word; Load default template... cout << "Total score: " << total << endl; } return 0;

420468 2512078.qx3zay7 Consider a comma-separated file that contains student names and scores such as the following: Jane Lee, 100, 98, 97, 100 Aaron X. Schmidt, 37, 42, 49, 54 Frank von Tardy, 2, 3, 10, 7 We can read the file one line at a time and use an istringstream object to process the scores. To get the position of the first comma, simply read words from the input stream until the word ends with a comma. Then, read and sum the numbers remaining on the line. Use get to remove the commas following each number. Rearrange the lines below to compute the total score for a single student. Assume that each student has at least one score. Mouse: Drag/drop Keyboard: Grab/release [Spacebar (or Enter). Move 100. Cancel Esc Unused total total + score; while (getline(in_file, line)) in.str(line); in >> word; char ch; in.get(ch); in >> word; while (word [word.size()-1] != ',') total = 0; while (in >> score) istringstream in; } } main.cpp #include #include #include using namespace std; int main() { ifstream in file; in_file.open("scores.txt"); string line; int total; int score; string word; Load default template... cout << "Total score: " << total << endl; } return 0;

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

CHALLENGE
ACTIVITY
420468 2512078.qx3zqy7
Consider a comma-separated file that contains student names and scores such as the following:
Jane Lee, 100, 98, 97, 100
Aaron X. Schmidt, 37, 42, 49, 54
Frank von Tardy, 2, 3, 10, 7
8.19.4: Rearrange the lines to compute the total score for a single student.
We can read the file one line at a time and use an istringstream object to process the scores. To get the position of the first
comma, simply read words from the input stream until the word ends with a comma. Then, read and sum the numbers remaining
on the line. Use get to remove the commas following each number.
Rearrange the lines below to compute the total score for a single student. Assume that each student has at least one score.
Mouse: Drag/drop
Keyboard: Grab/release Spacebar (or Enter). Move 100. Cancel Esc
Unused
total= total + score;
while (getline(in_file, line))
in.str(line);
in >> word;
char ch;
in.get(ch);
in >> word;
while (word [word.size()-1] != ',')
total = 0;
while (in >> score)
istringstream in;
}
}
Check
main.cpp
#include <iostream>
#include <fstream>
#include <sstream>
using namespace std;
int main()
{
ifstream in_file;
in_file.open("scores.txt");
string line;
int total;
int score;
string word;
Load default template...
cout << "Total score: " << total << endl;
}
return 0;
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