Categories:
.NET (357)
C (330)
C++ (183)
CSS (84)
DBA (2)
General (7)
HTML (4)
Java (574)
JavaScript (106)
JSP (66)
Oracle (114)
Perl (46)
Perl (1)
PHP (1)
PL/SQL (1)
RSS (51)
Software QA (13)
SQL Server (1)
Windows (1)
XHTML (173)
Other Resources:
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?
✍: Guest
The type.
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
int a[10];
a reference to a has type ``pointer to int,'' and &a is ``pointer to array of 10 ints.'' For a two-dimensional array like
int array[NROWS][NCOLUMNS];
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, 1055👍, 0💬
Popular Posts:
What is continuous and staged representation? CMMI contains 25 key process areas which organization ...
What’s the difference between Unit testing, Assembly testing and Regression testing? Unit testing is...
How To Increment Dates by 1? - Oracle DBA FAQ - Understanding SQL Basics If you have a date, and you...
How do we host a WCF service in IIS? Note: - The best to know how to host a WCF in IIS is by doing a...
What is the difference between Authentication and authorization? This can be a tricky question. Thes...