Working with floats from user input in C

[Qomplainerz]

Example:

float radius;
printf("Enter the radius of a circle: ");
scanf("%f", &radius);
float area = 3.14159 * radius * radius;
printf("The area of the circle is: %.2f\n", area);

Explanation:

In this example, we declare a float variable radius to store the user's input.
We prompt the user to enter the radius of a circle using printf().
We use the %f format specifier in scanf() to read a floating-point value from the user and store it in the radius variable.
We calculate the area of the circle using the formula area = π * r^2, where π is approximated as 3.14159.
Finally, we print the calculated area using printf(). The .2 in the format specifier %.2f ensures that the area is displayed with two decimal places.