#include <iostream> //Ever Ibarra Almaral TC1017
using namespace std;

long fibonacci(long n){
  long x;
      if (n<=1){
      x=n;
      return x;
  }
      else{
      if(n>1){
          int y=0;
          int z=1;
          long temp;
          for(int i=1;i<n;i++){
      temp=y+z;
      y=z;
      z=temp;
    }
    return z;}
  }
  }

  void newline(){
    cout<<endl;
  }
  int main () {
    long a;
  cout << "Hello, I´m a calculator of fibonacci algorithm";
  newline();   newline();
  cout << "Please, enter the position of the number in the fibonacci algorithm: ";
  cin >> a;
  newline();
  cout << "The fibonacci number is: " << fibonacci (a);

  return 0;


}

#include <iostream> //Ever Ibarra Almaral TC1017
#include <string>
using namespace std;

string palindrome(string a){

a=string(a.rbegin(), a.rend());
return a;
}

void newline(){
  cout<<endl;
}

int main(){
  string b;
  cout<<"Enter the string "<<endl;
  cin>>b;
  newline();
  cout<<"the reverse string equals to "<<palindrome(b);
newline();
  if (b==palindrome(b)){
    cout<<"The string is a palindrome"<<endl;
    newline();
  }
  else{
    cout<<"The string its not a palindrome"<<endl;
    newline();
  }

  return 0;
}

#include <iostream>
#include <math.h>
using namespace std;

double addition  (double a, double b){ //addition is the name of the function
return a+b;
}

double sustraction (double a, double b){
return a-b;
}

double product (double a, double b){
return a*b;
}

double division (double a, double b){
return a/b;
}

int remainder (int a, int b){
return a%b;
}

void newline(){
  cout<<endl;
}

int main(){
double a;
double b;
cout<<"Hi, I´m a calculator of two numbers, I will make operations of addition, product"<<endl;
cout<<"sustraction, division and eventually calculate the remainder between the numbers you´ll give me"<<endl;
newline();
cout<<"Please, give me the first value "; cin>>a;
newline();
cout<<"Please, give me the second value "; cin>>b;
newline();
cout<<"The addition of the numbers equals to "<< addition(a,b)<<endl; //We are calling the function
cout<<"The sustraction of the numbers equals to "<< sustraction(a,b)<<endl;
cout<<"The product of the numbers equals to "<< product(a,b)<<endl;
cout<<"The division of the numbers equals to "<< division(a,b)<<endl;
cout<<"The remainder of the division equals to "<< remainder(a,b)<<endl;

return 0; //...So the programm wont return values.
}