Could you give examples of the main data types widely used in programming?

The main data types widely used in programming are:

• int — integer values (e.g., 42, -7).
• float/double — floating-point numbers (e.g., 3.14, -0.001).
• bool — boolean values (true or false).
• char — a single character (e.g., 'a', 'Z').
• string — a sequence of characters, text (e.g., "Hello").

In C# example of declaring variables of different types:

int age = 30;
double price = 19.99;
bool isActive = true;
char grade = 'A';
string name = "Ivan";