; but I want to understand why.The float data type is used for storing decimal numbers with single precision, while the integer data type is used for storing whole numbers without any decimal places. Float variables can store a wider range of values compared to integer variables, but they may not always be as precise.
To declare a float variable, you can use the float keyword followed by the variable name, such as float num. To initialize the variable with a value, you can use the equal sign and assign a number, such as float num = 3.14. You can also use scientific notation to initialize a float variable, such as float num = 1.5e2, which is equivalent to 150.
The output of a float calculation will also be a float value, unless you explicitly convert it to an integer using the typecasting operator. If the result of the calculation cannot be represented as a float, it will be rounded to the nearest representable value.
You can use the printf() function with the %f placeholder to format the output of a float variable with a fixed number of decimal places. For example, printf("The value of num is %.2f", num) will print the value of the float variable num with 2 decimal places.
Yes, float variables can be used in conditional statements such as if-else and switch statements. However, since float values can be approximate, it is not recommended to use them in conditional statements for exact comparisons. It is better to use integer variables for conditional statements.