"Since arrays are represented using pointers, we can pass and return arrays to and from functions simply by passing in a pointer. When passing an array to a function, we also need to make sure that we communicate to the function the size of the array as there is no reliable way for the function to determine this. By passing both a pointer and an integer representing the size, we are implicitly indicating that we are passing an array and not just a single value. As an example, the following function takes an array of integers and computes their sum.\n\n1 /**\n\n2 * This function computes the sum of elements in the\n\n3 * given array which contains n elements\n\n4 */\n\n5 int computeSum(int *arr, int n) {\n\n6 int i;\n\n7 int sum = 0;\n\n8 for(i=0; i<size; i++) {\n\n9 sum += arr[i];\n\n10 }\n\n11 return sum;\n\n12 }"