include #include #include // input: file with integer on each line // output: sum of numbers int main() { // data.txt must be in same directory as program char path[256] = "data.txt"; std::ifstream file(path); if (!file.is_open()) { std::cout << "ERROR: the file " << path << " did not open" << std::endl; return -1; } // buffer to hold single line from file, up to some maximum number of characters c
include #include #include // input: file with integer on each line // output: sum of numbers int main() { // data.txt must be in same directory as program char path[256] = "data.txt"; std::ifstream file(path); if (!file.is_open()) { std::cout << "ERROR: the file " << path << " did not open" << std::endl; return -1; } // buffer to hold single line from file, up to some maximum number of characters c
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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#include
#include
#include
// input: file with integer on each line
// output: sum of numbers
int main()
{
// data.txt must be in same directory as program
char path[256] = "data.txt";
std::ifstream file(path);
if (!file.is_open())
{
std::cout << "ERROR: the file " << path << " did not open" << std::endl;
return -1;
}
// buffer to hold single line from file, up to some maximum number of characters
const int max_length = 1024;
char buffer[max_length] = {};
int sum = 0;
while (file.getline(buffer, max_length - 1))
{
// read "stoi" as "s-to-i" or "string to integer"
int number = std::stoi(buffer); // convert c-string to integer
sum += number;
}
std::cout << "sum = " << sum << std::endl;
return 0;
}
Transcribed Image Text:9. (a) Modify file sum.cpp to calculate the average of the numbers cotained in the
input file. Print the count and average value to six digits of precision. The
should assume the file has at least one line, but should make no other assumptions
about the length of the input file.
Using the data.txt file distributed on Canvas, your output should be:
program
count = 50
avg = 998.24
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