I need an idea!!!
Author
Hello,
Im re-learning the basics of C++ and am learning about references. My problem is that I need something to code that would require me apply the things I learned about references into the program.
what I learned about references:
- how to return a reference from a function
- how to create a reference (obviously :D)
- how to pass references to functions
- how to create const references
If anyone has any ideas for something for me to code to use all these elements please let me know. This is always a problem for me when Im learning something new, I never can think of something good to code to apply what I learned into a program.
Thanks for any help! [smile]
Quote:Original post by NUCLEAR RABBIT
If anyone has any ideas for something for me to code to use all these elements please let me know. This is always a problem for me when Im learning something new, I never can think of something good to code to apply what I learned into a program.
Usually, whatever book you are learning from will have plenty of exercises at the end of each chapter that require you to practice and use the contents of that chapter.
-me
Write a function to swap two values. So that if I say:
int a = 10;
int b = 20;
swap(a,b);
cout << a << " " << b << endl;
it should print:
20 10
Not too hard but I don't know what level your at...
int a = 10;
int b = 20;
swap(a,b);
cout << a << " " << b << endl;
it should print:
20 10
Not too hard but I don't know what level your at...
Author
Quote:Original post by esuvs
Write a function to swap two values. So that if I say:
int a = 10;
int b = 20;
swap(a,b);
cout << a << " " << b << endl;
it should print:
20 10
Not too hard but I don't know what level your at...
I already did that [lol]
well, I came up with a dumb little project just to use what I learned. If anyone wants to check it out, heres the code. Let me know if you see something I should improve on or something I should learn.
// eFriendList// 7/16/07// Allows the user to add, delete, and display a list of their friends (lame)#include <iostream>#include <string>#include <vector>#include <iterator>void AddFriend(std::vector<std::string> & friends);void DeleteFriend(std::vector<std::string> & friends);void DisplayFriends(const std::vector<std::string> & friends);void Pause();void InvalidOption();int Menu();int main(){ system("TITLE eFriendsList"); std::vector<std::string> FriendsList; bool exit = false; do { switch(Menu()) { case 1: AddFriend(FriendsList); break; case 2: DeleteFriend(FriendsList); break; case 3: DisplayFriends(FriendsList); break; case 4: exit = true; break; default: InvalidOption(); system("CLS"); } }while(exit == false); return 0;}//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////int Menu(){ int option = 0; system("CLS"); std::cout << "|--------------------------|\n" << "| Welcome to eFriendList |\n" << "| ---------------------- |\n" << "| |\n" << "| 1 = Add Friend |\n" << "| 2 = Delete Friend |\n" << "| 3 = Display Friend List |\n" << "| 4 = Exit eFriendList |\n" << "| |\n" << "|--------------------------|\n\n" << "Selection: "; std::cin >> option; system("CLS"); return (option);}//-----------------------------------------------------------------------------------------void Pause(){ std::cout << "\nPress ENTER to continue.\n"; std::cin.ignore(); std::cin.get();}//-----------------------------------------------------------------------------------------void AddFriend(std::vector<std::string> & friends){ std::string friend_name; std::cout << "Enter Friend Name: "; std::cin.ignore(); std::getline(std::cin, friend_name); friends.push_back(friend_name); std::cout << "\nFriend Added Successfully.\n\n"; Pause();}//-----------------------------------------------------------------------------------------void DisplayFriends(const std::vector<std::string> & friends){ int counter = 0; if(!friends.empty()) { for(std::vector<std::string>::const_iterator cIter = friends.begin(); cIter != friends.end(); cIter++) { std::cout << counter << " = " << *cIter << "\n"; } } else { std::cout << "You have no friends added yet\n"; } Pause();}//-----------------------------------------------------------------------------------------void DeleteFriend(std::vector<std::string> & friends){ int friend_id; if(!friends.empty()) { DisplayFriends(friends); std::cout << "\nEnter Friend Number to delete friend: "; std::cin >> friend_id; friends.erase(friends.begin() + friend_id); std::cout << "\nDeletion Successful.\n"; } else { std::cout << "You have no friends added yet.\n"; } Pause();}//-----------------------------------------------------------------------------------------void InvalidOption(){ std::cout << "That is not an option.\n"; Pause();}This topic is closed to new replies.
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