Xcode(不正确)和其他(基于 Web 的编译器)的测试输入和输出如下:
输入 1:3 30 0.90 40
Xcode 输出 1:可接受的成功率:0.90
平均尝试销售量:30.00
平均完成销售量:19.33
观察到的成功率:0.64
观察到的成功率不在可接受的范围内。
程序以退出代码结束:0
其他编译器的输出 1(正确): 可接受的成功率:0.90
平均尝试销售量:30.00
平均完成销售量:19.67
观察到的成功率:0.66
观察到的成功率不在可接受的范围内。
输入 2:10 100 0.5 1
Xcode 输出 2:可接受的成功率:0.50
平均尝试销售量:100.00
平均完成销售量:29.40
观察到的成功率:0.29
观察到的成功率不在可接受的范围内。
程序以退出代码结束:0
其他编译器的输出 1(正确): 可接受的成功率:0.50
平均尝试销售量:100.00
平均完成销售量:28.80
观察到的成功率:0.29
观察到的成功率不在可接受的范围内。
#include <iostream>
#include <iomanip>
#include <stdlib.h>
using namespace std;
int main()
{
int iterations, seed;
double successRate;
float completedSales = 0, numAttempted;
int i, t;
int seatChoice;
//Add other variables necessary for your program
//cout << "Please enter number of iterations to be evaluated" <<endl;
cin >> iterations; //number of iterations to be evaluated
//cout << "Please enter number of attempted sales" <<endl;
cin >> numAttempted; //number of attempted sales
//cout << "Please enter expected success rate" <<endl;
cin >> successRate;
//cout << "Please enter seed for random number generation" <<endl;
cin >> seed; //seed for random number generation
//Validate input
if(iterations <= 0 || numAttempted < 0 || seed < 0 ) {
cout << "Error. Invalid parameters.";
}
else if(successRate < 0 || successRate > 1) {
cout << "Error. Invalid parameters.";
}
else {
//Set seed and start iterations
srand(seed);
//Every iteration of the simulation starts by setting all seats to empty
for(i = 0; i < iterations; ++i) {
int availableSeats[30] = {0};
for(t = 0; t < numAttempted; ++t) {
seatChoice = (rand() % 30);
if(availableSeats[seatChoice] == 0) {
availableSeats[seatChoice] = 1.0;
completedSales++;
}
}
}
float averageSales = (float) completedSales/iterations;
float observedSuccessRate = (float) averageSales/numAttempted;
//Complete final output:
cout << setprecision(2) <<fixed;
cout << "Acceptable success rate: " <<successRate <<endl;
cout << "Average attempted sales: " <<(double)numAttempted <<endl;
cout << "Average completed sales: " <<averageSales <<endl;
cout << "Observed success rate: " <<(float)observedSuccessRate <<endl;
//Complete if statement to test success rate
if(observedSuccessRate < successRate) {
cout << "Observed success rate not in acceptable range." << endl;
}
else {
cout << "Observed success rate is acceptable." << endl;
}
}
return 0;
}