Passing Array to Function in C/CPP

[gauribhumi]

Wanted to know what are the methods that I can follow to pass an array to function in C and CPP.

Any suggestions would be helpful for me to understand.

[anon57585045]

Google "C++ pass by reference" and "C++ pass by pointer".

[johnwasser]

Arrays are passed by reference... The function gets a pointer to the array. That means the function has no way of knowing the dimensions of the array. Unless the array size is fixed, you would pass the number of elements as a separate argument.

[J-M-L]

Although probably far fetched, You could also bundle the array in a struct and pass the struct as parameter (by value/copy)

[nachocheesefries]

If you are using C then use -

1. return_type function(type arrayname[])
2. return_type function(type arrayname[SIZE])
3. return_type function(type *arrayname)

and For C++ use -

1. void myFunction(int *param)
2. void myFunction(int param[10])
3. void myFunction(int param[])

Note: C++ does not allow to pass an entire array as an argument to a function. However, You can pass a pointer to an array by specifying the array's name without an index.

If you want to understand how you can use arry function in C/CPP read this article.

[J-M-L]

As said above you can pass by reference in C++ which you did not list

You can’t pass the array by copy neither in C nor C++ (unless it’s bundled in a struct) - all the variations you listed is just passsing a pointer