The use of basic comparison operators in C++
The provided C++ code is a simple console application that demonstrates the use of basic comparison operators in C++.
Code
#include <iostream>
using namespace std;
int main() {
// Initialize two integer variables x and y
int x = 0, y = 0;
// Print the question: is x equal to y?
cout << "Question: is x equal to y?" << endl;
// Check if x is equal to y
if (x == y) {
// If x is equal to y, print the result
cout << "x is equal to y" << endl;
}
// Change the values of x and y
x = 0, y = 1;
// Print the question: is x not equal to y?
cout << "Question: is x not equal to y?" << endl;
// Check if x is not equal to y
if (x != y) {
// If x is not equal to y, print the result
cout << "x is not equal to y" << endl;
}
// Change the values of x and y
x = 1, y = 0;
// Print the question: is x greater than y?
cout << "Question: is x greater than y?" << endl;
// Check if x is greater than y
if (x > y) {
// If x is greater than y, print the result
cout << "x is greater than y" << endl;
}
// Change the values of x and y
x = 2, y = 1;
// Print the question: is x greater than or equal to y?
cout << "Question: is x greater than or equal to y?" << endl;
// Check if x is greater than or equal to y
if (x >= y) {
// If x is greater than or equal to y, print the result
cout << "x is greater than or equal to y" << endl;
}
// Change the values of x and y
x = 1, y = 2;
// Print the question: is x less than (or equal to) y?
cout << "Question: is x less than (or equal to) y?" << endl;
// Check if x is less than or equal to y
if (x <= y) {
// If x is less than or equal to y, print the result
cout << "x is less than or equal to y" << endl;
}
// End of the program
return 0;
}
Explanation
The provided C++ code is a simple console application that demonstrates the use of basic comparison operators in C++. It does so by initializing two integer variables, x
and y
, and then comparing them using different operators.
Initially, x
and y
are both set to 0
:
int x = 0, y = 0;
The code then prints a question to the console asking if x
is equal to y
:
cout << "Question: is x equal to y?" << endl;
This is followed by an if
statement that checks if x
is indeed equal to y
using the ==
operator. If the condition is true, it prints a message to the console:
if (x == y) {
cout << "x is equal to y" << endl;
}
The code then changes the values of x
and y
and repeats the process with different comparison operators (!=
, >
, >=
, <
, <=
). Each time, it prints a question to the console, checks the condition, and prints a message if the condition is true.
For example, after changing x
to 0
and y
to 1
, the code checks if x
is not equal to y
:
x = 0, y = 1;
cout << "Question: is x not equal to y?" << endl;
if (x != y) {
cout << "x is not equal to y" << endl;
}
This pattern continues until all the comparison operators have been demonstrated. The program then ends with a return 0;
statement, indicating successful execution.
Output
Question: is x equal to y?
x is equal to y
Question: is x not equal to y?
x is not equal to y
Question: is x greater than y?
x is greater than y
Question: is x greater than or equal to y?
x is greater than or equal to y
Question: is x less than (or equal to) y?
x is less than or equal to y
Process finished with exit code 0