Programming in C · topic
Array to pointer decay and its exceptions, sizeof traps, array parameters, two-dimensional arrays with row-major address arithmetic, character arrays versus string literals, sizeof versus strlen and the common string library functions.
A C array is a fixed number of objects of one type stored contiguously in memory. Arrays and pointers are closely tied: in most expressions an array name turns into a pointer to its first element, and the subscript a[i] is defined through pointer arithmetic.
C has no separate string type. A string is a sequence of characters terminated by the null character '\0' (value 0), stored in an array of char. Unbounded traversal functions such as strlen need a null terminator within accessible storage.
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