Get Coefficient

0 likes • Nov 18, 2022
C++

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/*Algorithm:Step 1: Get radius of the cylinder from the user and store in variable rStep 2: Get height of the cylinder from the user and store in variable hStep 3: Multiply radius * radius * height * pi and store in vStep 4: Display the volume*/
#include <iostream>using namespace std;

int main(){        float r; //define variable for radius        float h; //define variable for height        float v;        float pi;        pi=3.1416;
cout<<"Enter height:";        cin>>h;
v=r*r*h*pi;  //compute volume
cout<<"\n************************\n";
cout<<"Volume:"<<v<<endl;//display volume
return 0;}
#include <iostream>#include <cmath>#include <string.h>
using namespace std;
int main() {
string tickerName;    int numOfContracts;    float currentOptionValue;
cout << "Enter a stock ticker: ";    getline(cin, tickerName);
cout << "Enter the current number of " << tickerName << " contracts you are holding: ";    cin >> numOfContracts;

cout << "Enter the current price of the option: ";    cin >> currentOptionValue;

cout << "The value of your " << tickerName << " options are: \$" << (currentOptionValue * 100.00) * (numOfContracts);
cout << endl;
return 0;}

Hello World!

joshwrou
0 likes • Aug 31, 2020
C++
#include <iostream>using namespace std;
int main() {
cout << "Hello World!\n";// Prints out "Hello World"return 0;
}
//From https://create.arduino.cc/projecthub/abhilashpatel121/easyfft-fast-fourier-transform-fft-for-arduino-9d2677#include <cmath>#include <iostream>const unsigned char sine_data[] = {	//Quarter a sine wave	0, 	4, 9, 13, 18, 22, 27, 31, 35, 40, 44, 	49, 53, 57, 62, 66, 70, 75, 79, 83, 87, 	91, 96, 100, 104, 108, 112, 116, 120, 124, 127, 	131, 135, 139, 143, 146, 150, 153, 157, 160, 164, 	167, 171, 174, 177, 180, 183, 186, 189, 192, 195, //Paste this at top of program	198, 201, 204, 206, 209, 211, 214, 216, 219, 221, 	223, 225, 227, 229, 231, 233, 235, 236, 238, 240, 	241, 243, 244, 245, 246, 247, 248, 249, 250, 251, 	252, 253, 253, 254, 254, 254, 255, 255, 255, 255};float sine(int i){	//Inefficient sine	int j=i;	float out;	while(j < 0) j = j + 360;	while(j > 360) j = j - 360;	if(j > -1 && j < 91) out = sine_data[j];	else if(j > 90 && j < 181) out = sine_data[180 - j];	else if(j > 180 && j < 271) out = -sine_data[j - 180];	else if(j > 270 && j < 361) out = -sine_data[360 - j];	return (out / 255);}
float cosine(int i){	//Inefficient cosine	int j = i;	float out;	while(j < 0) j = j + 360;	while(j > 360) j = j - 360;	if(j > -1 && j < 91) out = sine_data[90 - j];	else if(j > 90 && j < 181) out = -sine_data[j - 90];	else if(j > 180 && j < 271) out = -sine_data[270 - j];	else if(j > 270 && j < 361) out = sine_data[j - 270];	return (out / 255);}
//Example data:
//-----------------------------FFT Function----------------------------------------------//float* FFT(int in[],unsigned int N,float Frequency){	//Result is highest frequencies in order of loudness. Needs to be deleted.	/*	Code to perform FFT on arduino,	setup:	paste sine_data [91] at top of program [global variable], paste FFT function at end of program	Term:	1. in[] : Data array, 	2. N : Number of sample (recommended sample size 2,4,8,16,32,64,128...)	3. Frequency: sampling frequency required as input (Hz)
If sample size is not in power of 2 it will be clipped to lower side of number. 	i.e, for 150 number of samples, code will consider first 128 sample, remaining sample will be omitted.	For Arduino nano, FFT of more than 128 sample not possible due to mamory limitation (64 recomended)	For higher Number of sample may arise Mamory related issue,	Code by ABHILASH	Contact: [email protected] 	Documentation:https://www.instructables.com/member/abhilash_patel/instructables/	2/3/2021: change data type of N from float to int for >=256 samples	*/
unsigned int sampleRates[13]={1,2,4,8,16,32,64,128,256,512,1024,2048};	int a = N;	int o;	for(int i=0;i<12;i++){		//Snapping N to a sample rate in sampleRates		if(sampleRates[i]<=a){			o = i;		}	}		 	int in_ps[sampleRates[o]] = {}; //input for sequencing	float out_r[sampleRates[o]] = {}; //real part of transform	float out_im[sampleRates[o]] = {}; //imaginory part of transform	int x = 0; 	int c1;	int f;	for(int b=0;b<o;b++){ // bit reversal		c1 = sampleRates[b];		f = sampleRates[o] / (c1 + c1);		for(int j = 0;j < c1;j++){ 			x = x + 1;			in_ps[x]=in_ps[j]+f;		}	}
for(int i=0;i<sampleRates[o];i++){ // update input array as per bit reverse order		if(in_ps[i]<a){			out_r[i]=in[in_ps[i]];		}		if(in_ps[i]>a){			out_r[i]=in[in_ps[i]-a];		} 	}

int i10,i11,n1;	float e,c,s,tr,ti;
for(int i=0;i<o;i++){ //fft		i10 = sampleRates[i]; // overall values of sine/cosine :		i11 = sampleRates[o] / sampleRates[i+1]; // loop with similar sine cosine:		e = 360 / sampleRates[i+1];		e = 0 - e;		n1 = 0;
for(int j=0;j<i10;j++){			c=cosine(e*j);			s=sine(e*j); 			n1=j;
for(int k=0;k<i11;k++){				tr = c*out_r[i10 + n1]-s*out_im[i10 + n1];				ti = s*out_r[i10 + n1]+c*out_im[i10 + n1];
out_r[n1 + i10] = out_r[n1]-tr;				out_r[n1] = out_r[n1]+tr;
out_im[n1 + i10] = out_im[n1]-ti;				out_im[n1] = out_im[n1]+ti;
n1 = n1+i10+i10;			} 		}	}
/*	for(int i=0;i<sampleRates[o];i++)	{	std::cout << (out_r[i]);	std::cout << ("\t"); // un comment to print RAW o/p 	std::cout << (out_im[i]); std::cout << ("i"); 	std::cout << std::endl;	}	*/

//---> here onward out_r contains amplitude and our_in conntains frequency (Hz)	for(int i=0;i<sampleRates[o-1];i++){ // getting amplitude from compex number		out_r[i] = sqrt(out_r[i]*out_r[i]+out_im[i]*out_im[i]); // to increase the speed delete sqrt		out_im[i] = i * Frequency / N;		std::cout << (out_im[i]); std::cout << ("Hz");		std::cout << ("\t");	// un comment to print freuency bin 		std::cout << (out_r[i]);		std::cout << std::endl;	}

x = 0; // peak detection	for(int i=1;i<sampleRates[o-1]-1;i++){		if(out_r[i]>out_r[i-1] && out_r[i]>out_r[i+1]){			in_ps[x] = i; //in_ps array used for storage of peak number			x = x + 1;		} 	}

s = 0;	c = 0;	for(int i=0;i<x;i++){ // re arraange as per magnitude		for(int j=c;j<x;j++){			if(out_r[in_ps[i]]<out_r[in_ps[j]]){				s=in_ps[i];				in_ps[i]=in_ps[j];				in_ps[j]=s;			}		}		c=c+1;	}	float* f_peaks = new float[sampleRates[o]];	for(int i=0;i<5;i++){ // updating f_peak array (global variable)with descending order		f_peaks[i]=out_im[in_ps[i]];	}	return f_peaks;}
//------------------------------------------------------------------------------------////main.cppint data[64]={14, 30, 35, 34, 34, 40, 46, 45, 30, 4, -26, -48, -55, -49, -37,-28, -24, -22, -13, 6, 32, 55, 65, 57, 38, 17, 1, -6, -11, -19, -34, -51, -61, -56, -35, -7, 18, 32, 35, 34, 35, 41, 46, 43, 26, -2, -31, -50,-55, -47, -35, -27, -24, -21, -10, 11, 37, 58, 64, 55, 34, 13, -1, -7};
int main(){	const unsigned int SAMPLE_RATE = 48*1000;	//48khz	auto result = FFT(data,64,SAMPLE_RATE);	std::cout << result[0] << " " << result[1] << " " << result[2] << " " << result[3] << std::endl;	delete[] result;	return 0;}
#include "goat.h" //include goat.h
void Goat::setBreed(string breed) {   this->breed = breed;}void Goat::setWeight(float weight) {   this->weight = weight;}void Goat::setName(string name) {   this->name = name;}void Goat::setGender(char gender) {   this->gender = gender;}void Goat::setSpayed(bool goatIsSpayed) {   this->goatIsSpayed = goatIsSpayed;}void Goat::setRegistrationID(string registrationID) {   this->registrationID = registrationID;}void Goat::setColor(string color) {   this->color = color;}void Goat::setOtherComments(string otherComments) {   this->otherComments = otherComments;}string Goat::getBreed() {   return breed;}float Goat::getWeight() {   return weight;}string Goat::getName() {   return name;}char Goat::getGender() {   return gender;}bool Goat::getSpayed() {   return goatIsSpayed;}string Goat::getRegistrationID() {   return registrationID;}string Goat::getColor() {   return color;}string Goat::getOtherComments() {   return otherComments;}
Goat::Goat() {   breed = "";   weight = 0.0;   name = "";   gender = '\0';   goatIsSpayed = false;   registrationID = "";   color = "";   otherComments = "";}
Goat::Goat(string goatBreed, float goatWeight, string goatName, char goatGender, bool goatSpayedStatus, string goatRegistrationID, string goatColor, string goatOtherComments) {     breed = goatBreed;   weight = goatWeight;   name = goatName;   gender = goatGender;   goatIsSpayed = goatSpayedStatus;   registrationID = goatRegistrationID;   color = goatColor;   otherComments = goatOtherComments;}
Goat::~Goat() {   cout << "goat destroyed" << endl;}
void Goat::printinfo() {     cout << "Breed: " << breed << endl << "weight: " << weight << endl << "Name: " << name << endl << "Gender: " << gender << endl << "is Spayed: ";   if(goatIsSpayed) {  //here I do a logical test on boolean goatIsSpayed. if true cout << true else cout << false      cout << "True";   } else {      cout << "False";   }   cout << endl << "Registration ID: " << registrationID << endl << "Color Description: " << color << endl << "Other Comments: " << otherComments << endl << endl;}

Enumeration Basics

AustinLeath
0 likes • Nov 18, 2022
C++
#include <iostream>using namespace std;/* Description: uses switch case statements to determine whether it is hot or not outside. Also uses toupper() function which forces user input char to be uppercase in order to work for the switch statement*/
int main() {  char choice;  cout << "S = Summer, F = Fall, W = Winter, P = Spring" << endl;  cout << "Enter a character to represent a season: ";asdasdasdasd  cin >> choice;
enum Season {SUMMER='S', FALL='F', WINTER='W', SPRING='P'};
switch(toupper(choice))  // This switch statement compares a character entered with values stored inside of an enum  {  case SUMMER:    cout << "It's very hot outside." << endl;    break;  case FALL:    cout << "It's great weather outside." << endl;    break;  case WINTER:    cout << "It's fairly cold outside." << endl;    break;  case SPRING:    cout << "It's rather warm outside." << endl;    break;  default:    cout << "Wrong choice" << endl;    break;  }  return 0;}