PredefinedFunctionsDEMO.cpp

//************************************************************************
// Author: Rolando Carreon
// Date: mar 4 2025
// Language: C++
// Assignment: PredefinedfunctionsDEMO
// Description: demonstarte a few predefined functions
//************************************************************************

#include<iostream>
#include<cmath> // use for math functions
using namespace std;

int main()
{
    // declare local variables
    int myInt = 5;
    double myDouble = 3.2;
    char myChar = 'A';
    
    
    
    cout << "Ceiling function " << ceil(myDouble) << endl; // rounds up
    cout << "Floor function" << floor(myDouble) << endl; // rounds down
    
    cout << "Power function " << pow(myInt, 3) << endl; // power exponent
    cout << "Square root function " << sqrt(25) << endl; // square root
    
    // alternate square root using power exponent
   // cout << "Square root function " << sqrt( pow(myInt, 2) ) << endl;
    
    // captures myChar binary dec. conversion number instead of myChar letter
    // cout << "To Lower Function " << tolower(myChar) << endl;
    
    // use static cast instead to get just char
    cout << "To Lower Function " << static_cast<char>(tolower(myChar))
         << endl;
    
    // insert only upper case number
    // if(letter = 65 && letter <= 90)
     // return letter + 32 // convert it to lower case
    
    // insert only lower case number
    // if(letter = 97 && letter <= 122)
     // return letter - 32 // convert it to upper case
    
    
    return 0;
}