C++ Tutorial Keywords

Syntax

• Keywords: C++ has 84 keywords that are reserved and cannot be used as variable names or identifiers.
• Data Types: C++ supports various data types such as int, float, double, char, etc.
• Operators: C++ supports various operators such as arithmetic, relational, logical, etc.

Example

#include <iostream>
using namespace std;
int main() {
    int num1 = 5;
    int num2 = 10;
    int sum = num1 + num2; 
    cout << "Sum of " << num1 << " and " << num2 << " is " << sum;
    return 0;
}

Output

Sum of 5 and 10 is 15

Explanation

In the above example, we have declared two integer variables num1 and num2 and performed addition using the + operator and stored the result in another integer variable sum. The final output is displayed using the cout statement.

Use

Keywords are a fundamental part of the C++ language, and one must have a good understanding of them to write efficient programs. By using the right keywords, one can declare variables, control the flow of the program, and perform various operations.

Important Points

• Keywords in C++ are reserved and cannot be used as variable names or identifiers.
• C++ supports various data types such as int, float, double, char, etc.
• C++ supports various operators such as arithmetic, relational, logical, etc.

Summary

In this tutorial, we learned about the syntax and examples of various C++ keywords, their use, important points to keep in mind, and a brief overview of data types and operators in C++.