Question

Write a C++ program that reads unknown number of schools infymation (school name, number of teachers, number of students) from a file called schools.txt and then displays a summary statistic of the information. Your program shall implement the following functions: double GetRatio (int Tn, int Sn): The function receives the number of teachers (Tn) and the number of students (Sn) on a school and it returns the ratio of the number of the students to the number of teachers (Sn/Tn). string MaxRatio (string Sname, double r): The function receives the school name (Sname) and the ration of the number of students to the number of teachers computed by GetRatio function. The function returns the school name (Sname) with the maximum ratio value. Hint: Use static variable to keep record of the maximum ratio value and another variable to keep record of the name of the school of the maximum ratio value. void Totals (int Tn, int Sn, int&Ttot, int &Stot): void function that receives number of teachers (Tn) and the number of students (Sn) on a school and it computes the total number of students and the total number of teachers for all schools through pass by reference variables Ttot (total teachers) and Stot (total students) STRatio School_e1 40 500 School 82 33 465 School 03 20 276 School 84 53 687 School_e5 30 365 School 86 33 453 School e7 55 653 School e8 10 222 School 09 43 546 School_1e 15 234 School 11 22 453 School 12 40 334 hool_e1 hool e2 hool e3 hool 64 chool es chool 66 hool 07 chool e8 hool_e9 hool 1e hool 11 hool 12 12.5 14.1 13.8 13.0 12.2 13.7 11.9 22.2 12.7 15.6 20.6 8.3 1 with maximun Student/Teacher Ration: Schoo1 es Total Number of Teachers: 394 Total Number of Students: 5188 Press any key to continue . . . 100 % Sample Output Sample Input

Answer 1

#include "stdafx.h"

#include <fstream>

#include <iostream>

#include <sstream>

#include <string>

#include <vector>

#include <algorithm>

using namespace std;

//function to get ratio

double GetRatio(int Tn,int Sn){

return (double)Sn/Tn;

}

//function to calculate maximum ratio

string MaxRatio(string Sname,double r){

//use of static variable as required

static double maxRatio=-1;

static string schoolName;

if(maxRatio<r){

schoolName=Sname;

maxRatio=r;

}

return schoolName;

}

//function to calculate total for student and teacher

void Totals(int Tn,int Sn,int &Ttot,int &Stot){

Ttot=Ttot+Tn;

Stot=Stot+Sn;

}

int main()

{

//reading file

//give path here

ifstream in("school.txt");

ofstream myfile;

//creating vector to store data in the form of matrix

vector<vector<string>> matrix;

int Ttot=0,Stot=0;

int col=0,count=0,row=0,i,j;

string schoolName;

double ratio;

if (in) {

string line;

while (getline(in, line)) {

stringstream sep(line);

string field;

row=0;

matrix.push_back(vector<string>());

while (getline(sep, field, ' ')) {

//adding data to vector as string

matrix.back().push_back(field);

row++;

}

col=col+1;

}

}

cout<<"School Name\t\tSTRatio\n";

cout<<"***********\t\t*******\n";

for (int i = 0; i < matrix.size(); ++i)

{

//stoi is used to convert readed string to integer

//function is called to get ratio

ratio=GetRatio(stoi(matrix[i][1]),stoi(matrix[i][2]));

//printing school and ratio

cout<<matrix[i][0]<<"\t\t"<<ratio<<endl;

//getting school name with maximum ratio

schoolName=MaxRatio(matrix[i][0],ratio);

//adding to totals

Totals(stoi(matrix[i][1]),stoi(matrix[i][2]),Ttot,Stot);

}

//printing remainin Info

cout<<"School with maximum student/teacher Ratio: "<<schoolName<<endl;

cout<<"Total Number of Teachers: "<<Ttot<<endl;

cout<<"Total Number of Students: "<<Stot<<endl;

system("Pause");

return 0;

}

STRatio 3xxa 12.5 14.0909 13.8 12.9623 12.1667 13.7273 11.8727 22.2 12.6977 15.6 20.5909 8.35 School Name School_e1 School 02 School 03 School 04 School 05 School 06 School 07 School 08 School 09 School_10 School 11 School_12 School with maximum student/teacher Ratio: School 08 Total Number of Teachers: 394 Total Number of Students 5188 Press any key to cont inue . .