The first element of the multi-dimensional array is another array, so here, when we will pass a 2D array then it would be split into a pointer to the array. C Programming - Passing a multi-dimensional array to a function Posted on March 27, 2019 by Paul . Since the size of int under my system is 4 bytes (check by p sizeof(int) in gdb), and let's examine the four conseuctive bytes with starting address … This gives the "illusion" that when you pass the char*, you get all subsequent characters, as … For example if array name … One important thing for passing multidimensional arrays is, first array dimension does not have to be specified. In this article I will show you how to pass a multi-dimensional array as a parameter to a function in C. For simplicity, we will present only the case of 2D arrays, but same considerations will apply to a general, multi-dimensional, array. When pass an array to a function, it will decay to a pointer pointing to the first element of the array. In other words, we can do p *array in gdb and get 1 as well. 2D Array: It can be defined as an array of arrays.Or in other words, we can say that arrays are stored as an element in an array. The important thing is you need to FREE the matrix that was allocated. I have a function that checks for a winner and uses an array as a parameter, but I'm having trouble passing the array in main to the function. How to pass an entire array to a function as an argument? In C, all strings are passed as char* and the memory is traversed byte by byte until the '\0' character is found. However always mind that arrays are passed by reference. However, as it is a pointer (and a pointer is a variable), it can be incremented to the next character in memory. char x[][10] - Two dimensional character array that contains array … Next Page . Passing 2D char array to function in tic-tac-toe program. Passing 2d array to function in c using pointers. Returning an array from function is not as straight as passing array to function. I'm trying to create a tic-tac-toe game with a 2D array. Passing Arrays as Function Arguments in C. Advertisements. Hi guys, today we will see how to pass a 2D array as a parameter in C++. We have successfully learned the basic concepts and different library functions that C Programming offers. There are two ways to return an array from function. Function description void dispStrings(char x[][10],int n) This function will print the string arrays (two dimensional character arrays) passed through x and; while passing two dimensional arrays there is no need to mention number of rows but number of columns are necessary. In the above example, we have passed the address of each array element one by one using a for loop in C. However you can also pass an entire array to a function like this: Note: The array name itself is the address of first element of that array. Since each array of characters is, by C convention, terminated by a null character, we only have to tell the function how many rows there are so long as we're mindful about not reading or writing past these nulls. The second (and any subsequent) dimensions must be given or using single or double … It is important to remember that when we pass a 2D array as a parameter decays into a pointer to an array, not a pointer to a pointer. The source code of returning a two-dimensional array with reference to matrix addition is given here. I know I probably should use a pointer, … To access an element in row R and column C of this 2D array, use "array[R][C]". A one dimensional array can be easily passed as a pointer, but syntax for passing a 2D array to a function can be difficult to remember. This can be done by creating a two-dimensional array inside a function, allocating a memory and returning that array. Before moving to the topic let us discuss what is a 2D array. Passing an array to function is not big deal and is passed as other variables. If you want to pass a single-dimension array as an argument in a function, you would have to declare a formal parameter in one of following three ways and all three declaration methods produce similar results because each tells the compiler … We learned to pass array and return array from a function. Previous Page. 2D character arrays are very similar to the 2D integer arrays. Another interesting concept is the use of 2D character arrays.In the previous tutorial, we already saw that string is nothing but an array of characters which ends with a ‘\0’.