c++ int64_t

int64_t is a data type in C++ that represents a 64-bit signed integer. It is defined in the header file and can be used to store large integer values that range from -9223372036854775808 to 9223372036854775807. This data type is useful when dealing with large numbers, especially in mathematical calculations or when working with data that requires a high degree of precision. The int64_t data type is guaranteed to be implemented in a way that is consistent across different platforms and compilers, making it a reliable choice for numerical computations