What are the rules for the modulo operation in C++?

In C++, the modulus operator (%) calculates the remainder after dividing two numbers. The specific rule is as follows:

1. For integer types: the modulus operator returns the remainder after dividing two operands.
2. For floating point numbers: the modulus operator converts the floating point number to an integer, then performs integer modulus operation.

For example:

int a = 10;
int b = 3;
int result = a % b; // result的值为1，因为10除以3等于3余1

It is important to note that the modulus operator cannot be applied to floating-point data types, or else a compilation error will occur.