w3 q1
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90
main.cpp
90
main.cpp
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#include <iostream>
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#include <vector>
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#include <algorithm>
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#include <iomanip>
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#include "stats.h"
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using string = std::string;
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//Placw in header!
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template <typename T>
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void printm(T m){
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std::cout << m;
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void printm(T m)
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{
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std::cout << m;
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}
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template <typename T>
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void printlm(T m){
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printm(m);
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printm("\n");
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void printlm(T m)
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{
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printm(m);
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printm("\n");
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}
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typedef std::vector<double>::size_type vtype;
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double promptd(string,bool*);
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int main() {
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std::setprecision(3);
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printlm("Calculate median and average from sequence:");
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std::vector<double> v{};
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bool s {};
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do {
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auto d = promptd("Enter a number (Enter non-number to complete entry) : ",&s);
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if (s) v.push_back(d);
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}
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while(s);
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sort(v.begin(), v.end());
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printm("The count is: ");
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printlm(static_cast<int>(v.size()));
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printm("The median is: ");
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int halfway {static_cast<int>(v.size()) / 2};
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if (static_cast<int>(v.size())%2 == 1)
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printlm(v.at(static_cast<vtype>(halfway)));
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else
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printlm((v.at(static_cast<vtype>(halfway - 1)) + v.at(static_cast<vtype>(halfway))) / 2.0);
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double avg {};
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if (v.size() > 2) {
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for (vtype i = 1; i < v.size() - 1; ++i) avg += v.at(i);
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} else {
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for (vtype i = 0; i < v.size(); ++i) avg += v.at(i);
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}
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avg /= static_cast<int>(v.size());
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printm("The average is: ");
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printlm(avg);
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return 0;
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}
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double promptd(string message, bool *status) {
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double tr {};
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*status = false;
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std::cout << message;
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if (!(std::cin >> tr)){
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std::cin.clear();
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std::cin.ignore();
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int main()
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{
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std::setprecision(3);
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printlm("Calculate the average and median of scores:");
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bool s {};
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std::vector<double> v {};
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do
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{
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auto d = promptd("Enter a score (Enter a non number to finish entry) : ",&s);
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if (s) v.push_back(d);
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}
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while(s);
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printm("Score median is: ");
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printlm(med(v, false));
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printm("Score median (No Extremes) is: ");
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printlm(med(v, true));
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printm("Score average is: ");
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printlm(avg(v, false));
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printm("Score average (No Extremes) is: ");
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printlm(avg(v, true));
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return 0;
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}
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*status = true;
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return tr;
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}
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double promptd(string message, bool *status)
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{
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double tr {0.0};
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*status = false;
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std::cout << message;
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if (!(std::cin >> tr))
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{
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std::cin.clear();
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std::cin.ignore();
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return 0.0;
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}
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*status = true;
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return tr;
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}
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21
stats.cpp
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21
stats.cpp
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@ -0,0 +1,21 @@
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#include "stats.h"
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#include <vector>
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#include <algorithm>
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double med(std::vector<double> &scores,bool ignoreExtremes) {
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const auto len = scores.size() - (ignoreExtremes && scores.size() > 2) ? 2 : 0;
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sort(scores.begin(), scores.end());
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using vec_size = std::vector<double>::size_type;
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const vec_size middle = (vec_size) (len / 2);
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if (middle%2 == 1)
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return scores[middle];
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else
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return (scores[middle - 1] + scores[middle]) / 2.0;
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}
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double avg(const std::vector<double> &scores,bool ignoreExtremes) {
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auto sum = 0.0;
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using vec_size = std::vector<double>::size_type;
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for (vec_size i = (ignoreExtremes && scores.size() > 2) ? 1 : 0; i < scores.size() - (ignoreExtremes && scores.size() > 2) ? 1 : 0; i++) sum += scores[i];
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return sum / static_cast<double>(scores.size() - (ignoreExtremes && scores.size() > 2) ? 2 : 0);
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}
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