Since array references decay into pointers ...
Since array references decay into pointers, if arr is an array, what's the difference between arr and &arr?
In Standard C, &arr yields a pointer, of type pointer-to-array-of-T, to the entire array. (In pre-ANSI C, the & in &arr generally elicited a warning, and was generally ignored.) Under all C compilers, a simple reference (without an explicit &) to an array yields a pointer, of type pointer-to-T, to the array's first element.
For a simple array
a reference to a has type ``pointer to int,'' and &a is ``pointer to array of 10 ints.'' For a two-dimensional array like
a reference to array has type ``pointer to array of NCOLUMNS ints,'' while &array has type ``pointer to array of NROWS arrays of NCOLUMNS ints.''
2015-12-09, 783👍, 0💬
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