#include <iostream>
#include <string>
#include <queue>
void mainMenu();
void enQueue();
void deleteQueue();
void frontOfQueue();
void backOfQueue();
void printEntireQueue();
void checkQueueVolume();
void countIntegerInQueue();
void exitProgram();
std::queue <int> myQueue;
std::queue <int> returnToMyQueue;
int main() {
bool inputCheck = false;
std::string userInput;
while (inputCheck == false){
mainMenu();
std::cout << "\n\n>> ";
std::cin >> userInput;
system("CLS");
if (userInput == "A"){
enQueue();
}
else if (userInput == "B"){
deleteQueue();
}
else if (userInput == "C"){
frontOfQueue();
}
else if (userInput == "D"){
backOfQueue();
}
else if (userInput == "E"){
printEntireQueue();
}
else if (userInput == "F"){
checkQueueVolume();
}
else if (userInput == "H"){
countIntegerInQueue();
}
else if (userInput == "G"){
exitProgram();
}
}
return 0;
}
void mainMenu(){
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "(A) Insert An Integer Into The Queue.\n";
std::cout << "(B) Delete All Data In The Queue.\n";
std::cout << "(C) Print data at the front.\n";
std::cout << "(D) Print data at the back.\n";
std::cout << "(E) Print entire queue.\n";
std::cout << "(F) Check If The Queue Is Empty.\n";
std::cout << "(H) Print-Out The Number Of Integer(s) In The Queue.\n";
std::cout << "(G) Print the number of elements in the queue.\n" << std::endl;
}
void enQueue(){
int userInteger;
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-Type In An Integer And Press Enter.\n\n>> ";
std::cin >> userInteger;
system("CLS");
myQueue.insert(userInteger);
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Integer " << userInteger << " Has Been Inserted Into The Queue.\n" << std::endl;
system("PAUSE");
system("CLS");
void deleteQueue()
{
while (myQueue.size() != 0){
myQueue.pop();
}
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-All Data In The Queue Has Been Deleted.\n\n";
system("PAUSE");
system("CLS");
}
void frontOfQueue(){
if (myQueue.empty() != true){
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Integer At The Front Of The Queue is " << myQueue.front() << "." << std::endl << std::endl;
system("PAUSE");
system("CLS");
}
else{
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Queue is Empty.\n\n";
system("PAUSE");
system("CLS");
}
}
void backOfQueue(){
if (myQueue.empty() != true){
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Integer At The Back Of The Queue is " << myQueue.back() << "." << std::endl << std::endl;
system("PAUSE");
system("CLS");
}
else{
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Queue is Empty.\n\n";
system("PAUSE");
system("CLS");
}
}
void printEntireQueue(){
if (myQueue.empty() != true){
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-Printing Queue From Front To Back...\n\n";
while (myQueue.size() != 0){
int returnData;
std::cout << myQueue.front() << " , ";
returnData = myQueue.front();
returnToMyQueue.emplace(returnData);
myQueue.pop();
}
while (returnToMyQueue.size() != 0){
myQueue.push(returnToMyQueue.front());
returnToMyQueue.pop();
}
std::cout << std::endl << std::endl;
system("PAUSE");
system("CLS");
}
else{
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Queue is Empty.\n\n";
system("PAUSE");
system("CLS");
}
}
void checkQueueVolume(){
if (myQueue.empty() == true){
std::cout << "\n\n\t\t\t\t DON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Queue is Empty.\n\n";
system("PAUSE");
system("CLS");
}
else{
std::cout << "\n\n\t\t\t\t DON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Queue is Not Empty. There is " << myQueue.size() << " Integer(s) In The Queue.\n\n";
system("PAUSE");
system("CLS");
}
}
void countIntegerInQueue(){
if (myQueue.size() != 0){
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Number of Integer(s)) In The Queue is " << myQueue.size() << ".\n\n";
system("PAUSE");
system("CLS");
}
else{
std::cout << "\n\n\t\t\t\tDON'T CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-The Queue is Empty.\n\n";
system("PAUSE");
system("CLS");
}
}
void exitProgram(){
std::cout << "\n\n\t\t\t\tDO NOT CUT THE QUEUE\n\n\n\n" << std::endl;
std::cout << "-To End The Program Enter \"Y\" OR \"N\" To Return To The Main Menu.\n\n>> ";
std::string userEndProgramChoice;
std::cin >> userEndProgramChoice;
if (userEndProgramChoice == "Y"){
std::cout << "Exiting Program\n\n";
exit(0);
}
else if (userEndProgramChoice == "N"){
system("CLS");
return;
}
}
Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!
OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.
#include <iostream>
#include <string>
using namespace std;
int main()
{
string name;
cout << "Enter name:";
getline (cin, name);
cout << "Hello " << name;
return 0;
}
C++ is a widely used middle-level programming language.
When ever you want to perform a set of operations based on a condition If-Else is used.
if(conditional-expression) {
//code
}
else {
//code
}
You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to If-Else-If ladder.
switch(conditional-expression){
case value1:
// code
break; // optional
case value2:
// code
break; // optional
......
default:
code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement){
//code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while (condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.
return_type function_name(parameters);
function_name (parameters)
return_type function_name(parameters) {
// code
}