Question

C++ Visual Studios

Your program will attempt to guess a number that the user is thinking of within the range [1, 20) (1 inclusive 20 exclusive). Your program will have 5 tries and each time the user should be able to tell your program if it is either correct, high, or low. If your program attempts 5 times but is not told that it is correct on the 5th try you should output "You cheated...". Otherwise your program should always be able to guess the correct answer if the user plays the game properly.

In this program you are required to write a function that takes a number (int) as a parameter and outputs the prompt to the user that guesses that number (tells the user "Is this your number: <guess>") and shows them a menu that explains how to enter correct, high, or low. You may use the method that we used in class, where the user enters a number corresponding to their selection of high, low, or correct. (this function should be a int function that returns the users selection)

The next function that is required is the function that is used to calculate the next guess after being told that the previous guess was either high or low. (I will leave the design of this function up to you)

Answer 1

#include<stdio.h>
#include<math.h>
#include <stdlib.h>

int N; //number of values in file

//function computing the sum of squares
double E(double x[],int size) {
double summSquare = 0;

for(int i=0;i<size;i++){
summSquare = summSquare + x[i]*x[i];
}

return summSquare;
}

// function computing normcorr
double normcorr(double x[],double y[],int size) {

double productSum = 0;
double squarerootProduct = sqrt(E(x,size))*sqrt(E(y,size));
for(int i=0;i<size;i++){
productSum = productSum + x[i]*y[i];
}

return (1/squarerootProduct)*productSum;
}

// function reading file up-to EOF
double *readFile(char *fileName) {

double X[10000];
FILE *fpr;
char str[200];
fpr = fopen(fileName, "r");

if (fpr == NULL)
{
puts("Could not open file");
}
int i = 0;
int sizeX;
while(1)
{

if(fgets(str, 10, fpr) ==NULL)
break;
else{
X[i] = atof(str);
i++;
}

}
sizeX = i;
fclose(fpr);
for(int i=0;i<sizeX;i++){
}

// allocating memory dynamically since size of file is not known prior
double *fileContents;
fileContents = (double *)malloc(sizeof(double)*sizeX);

for(int i=0;i<sizeX;i++){
fileContents[i] = X[i];
}
N = sizeX;
return fileContents;
}

// function cater for cases when sizes of 2 files is not the same,
int getMinimumSize(int x, int y)
{
return (x < y) ? x : y;
}

int main(){

double *contentOfReferenceECG = readFile("ReferenceECG.txt");
int sizeReferenceECG = N;

double *contentOfNormalECG = readFile("NormalECG.txt");
int sizeNormalECG = N;

double *contentOfAbnormalECG = readFile("AbnormalECG.txt");
int sizeAbnormalECG = N;

printf("\nReferenceECG: ");
for(int i=0;i<sizeReferenceECG ;i++){
printf("%lf ",contentOfReferenceECG[i]);
}

printf("\nNormalECG: ");
for(int i=0;i<sizeNormalECG;i++){
printf("%lf ",contentOfNormalECG[i]);
}

printf("\nAbnormalECG: ");
for(int i=0;i<sizeAbnormalECG;i++){
printf("%lf ",contentOfAbnormalECG [i]);
}

int size;

size = getMinimumSize(sizeReferenceECG,sizeNormalECG);
printf("\n normcorr(ReferenceECG,NormalECG) = %0.2lf",normcorr(contentOfReferenceECG,contentOfNormalECG,size));

size = getMinimumSize(sizeReferenceECG,sizeAbnormalECG);
printf("\n normcorr(ReferenceECG,AbnormalECG) = %0.2lf",normcorr(contentOfReferenceECG,contentOfAbnormalECG,size));

return 0;}