The long long type of C is an integer type that is usually used to represent very large integer values. In C, the size of the long long type depends on the compiler and platform, but usually it is at least 64 bits. This means that the long long type can store very large numbers, such as hundreds of millions or more.
Here are some of the characteristics of the long long type:
Size and range: The long long type usually has at least 64 bits, so its range of values is very wide. The exact range depends on the platform and compiler, but can usually be expressed as an integer value from -9223372036854775808 to 9223372036854775807.
Storage: Variables of the long long type usually take up more memory space because they need to store larger values. On most modern computers, the long long type typically occupies 8 bytes (64 bits) of memory space.
Precision: Since long long types can store very large numerical values, they usually have a high degree of precision. This means that they can accurately represent very large or very small numerical values without overflow or truncation errors.
Usage: In C, you can use the long long type to declare variables, arrays, function parameters, etc. For example:
long long num = 123456789012;
Here a variable of type long called num is declared and initialized to a very large integer value.
It is important to note that although long long types can represent very large numerical values, they still have their limitations. For larger values, you may need to use other data structures or library functions to handle them.