size_t type is a base unsigned integer type of C/C++ language. It is the type of the result returned by sizeof operator. The type's size is chosen so that it can store the maximum size of a theoretically possible array of any type. On a 32-bit system size_t will take 32 bits, on a 64-bit one 64 bits.What is size_t in C language?
The datatype size_t is unsigned integral type. It represents the size of any object in bytes and returned by sizeof operator. It is used for array indexing and counting. It can never be negative. The return type of strcspn, strlen functions is size_t. Here is the syntax of size_t in C language, var_name − This the name of variable.Why size_T type is never negative in C?
The size_t data type is never negative. Therefore many C library functions like malloc, memcpy and strlen declare their arguments and return type as size_t. For instance, // Declaration of various standard library functions. // allocated which is guaranteed to be non-negative. // n must be non-negative integer.Is there a format specifier specifically for size_t?
Is there a format specifier specifically for size_t? The other length modifiers that are available are hh (for char ), h (for short ), l (for long ), ll (for long long ), j (for intmax_t ), t (for ptrdiff_t ), and L (for long double ). See §18.104.22.168 (7) of the C99 standard. Yes, there is. It is %zu (as specified in ANSI C99).