CCSF: CS 110C-Data Structures & Algorithms C++ (Class 2)

main.cpp

// C++ styleguide: https://google.github.io/styleguide/cppguide.html
// in class video: https://youtu.be/p60rN9JEapg

#include <iostream>
#include "namespace.h"

int main(int argc, const char * argv[]) {
    // strings are immutable
    std::string hello = "Hello, World!\n";
    std::cout << hello;

    // prompt: get some value from the command line and print
    std::string userInput;
    // at this point in your program, you will click on the
    // console, enter some input and then press 'enter' to continue.
    std::cin >> userInput;
    std::cout << userInput << std::endl;

    // use custom namespace 'lk'
    lk::cout();

    // prompt: write a 'for loop' that sums all of the numbers from 1 to 9
    int total = 0;
    for(int i = 1; i <= 9; i++){
        total += i;
    }
    std::cout << "total: " << total <<  std::endl;

    // prompt: print powers of 3 up to the 10th power
    int i = 1;
    int result = 1;
    while (i <= 10){
        i ++;
        result *= 3;
        std::cout << "powers of 3: " << result <<  std::endl;
    }

    return 0;
}

namespace.cpp

#include <iostream>

// function implementation
namespace lk {
    void cout(){
        std::cout << "cs course\n";
    }
}

namespace.h

#ifndef namespace_h
#define namespace_h

// function prototype
namespace lk {
    void cout();
}

#endif /* namespace_h */