Modify this program so that it writes the values in two columns, like this: 32.00 54.00 67.50 29.00 35.00 80.00 115.00 44.50 100.00 65.00 Total: 622.00

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter5: Control Structures Ii (repetition)
Section: Chapter Questions
Problem 30SA
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Modify this program so that it writes the values in two columns, like this:
32.00
54.00
67.50
29.00
35.00
80.00
115.00
44.50
100.00
65.00
Total:
622.00
Complete the following file:
total.cpp
1
#include <iostream>
#include <fstream>
3 #include <iomanip>
#include <string>
5 using namespace std;
4
7 int main()
8 {
// Prompt for the input and output file names
cout << "Input file: ";
string input_file; cin >» input_file;
cout <« "Output file: ";
string output_file; cin >> output_file;
10
11
12
13
14
// Construct the streams for reading and writing
ifstream in(input_file);
ofstream out(output_file);
15
16
17
18
// Check for errors and format the output stream
if (in.fail() || out.fail(O) { return - 1; }
out <« fixed <« setprecision(2);
19
20
21
22
// Read the input and write the output
double tot
23
24
= 0;
25
double value;
while (in >> value)
{
out <« setw(15) <« value <« endl;
total = total + value;
}
26
27
28
29
30
31
32
33
out << setw(8) << total « endl;
34
35
return 0;
36 }
Transcribed Image Text:Modify this program so that it writes the values in two columns, like this: 32.00 54.00 67.50 29.00 35.00 80.00 115.00 44.50 100.00 65.00 Total: 622.00 Complete the following file: total.cpp 1 #include <iostream> #include <fstream> 3 #include <iomanip> #include <string> 5 using namespace std; 4 7 int main() 8 { // Prompt for the input and output file names cout << "Input file: "; string input_file; cin >» input_file; cout <« "Output file: "; string output_file; cin >> output_file; 10 11 12 13 14 // Construct the streams for reading and writing ifstream in(input_file); ofstream out(output_file); 15 16 17 18 // Check for errors and format the output stream if (in.fail() || out.fail(O) { return - 1; } out <« fixed <« setprecision(2); 19 20 21 22 // Read the input and write the output double tot 23 24 = 0; 25 double value; while (in >> value) { out <« setw(15) <« value <« endl; total = total + value; } 26 27 28 29 30 31 32 33 out << setw(8) << total « endl; 34 35 return 0; 36 }
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