Data Types in C++

In C++, data types are used to specify the type and size of data that can be stored in variables. Each data type has a different set of values it can represent and occupies a specific amount of memory.

Here are some of the commonly used data types in C++:

• int: Used to store whole numbers (e.g., 10, -5, 1000).
• float: Used to store floating-point numbers with a decimal part (e.g., 3.14, -0.5, 2.0).
• char: Used to store single characters (e.g., 'a', 'X', '@').
• bool: Used to store boolean values (either true or false).

These data types can be used to declare variables and assign values to them. Here's an example:

1#include <iostream>
2using namespace std;
3
4int main() {
5  int age = 30;
6  float height = 180.5;
7  char grade = 'A';
8  bool isProgrammer = true;
9
10  // Output the values
11  cout << "My age is " << age << endl;
12  cout << "My height is " << height << endl;
13  cout << "My grade is " << grade << endl;
14  cout << "Am I a programmer? " << boolalpha << isProgrammer << endl;
15
16  return 0;
17}

The code above declares variables of different data types and assigns them values. It then outputs the values using the cout statement. When using cout to output boolean values, the boolalpha manipulator is used to display true or false instead of 1 or 0.

By understanding the different data types in C++, you can effectively store and manipulate various types of data in your programs.

Next, we will explore control flow in C++ and learn how to use conditional statements and loops to control the flow of execution in our programs.

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#include <iostream>

using namespace std;

​

int main() {

  int age = 30;

  float height = 180.5;

  char grade = 'A';

  bool isProgrammer = true;

​

  cout << "My age is " << age << endl;

  cout << "My height is " << height << endl;

  cout << "My grade is " << grade << endl;

  cout << "Am I a programmer? " << boolalpha << isProgrammer << endl;

​

  return 0;

}