difference between %f and %lf

%f is used to format and print a float, while %lf is used to format and print a double. In C, %f is used for both float and double, and there is no difference in the output when using %f or %lf with printf and scanf functions. The %lf is primarily used in the context of function prototypes to indicate that a parameter or return value is of type double.

When using printf or scanf with %f or %lf, the distinction is not necessary, and both specifiers can be used interchangeably for float and double types.