in c please

Part 1: Coding [10 marks]. Matrices are rectangular arrays of numbers that have many applications in science, mathematics, and engineering. Each entry in a matrix has a row index and a column index typically denoted by two subscripts. For example, the matrix 10,0 a 1,0 20,1 0 1,1 20,2 a 1,2 : : Lan-1,0 an-1,1 an-1,2 has n rows (indexed by an integer from 0 to n - 1) and 3 columns (indexed by an integer from 0 to 2) and is said to be an n x 3 matrix. In C, matrices can be stored as a two-dimensional array. For example, the declaration int a[n][3]; allocates enough memory to store an n x 3 matrix. During the lab, the assistants will go over multi-dimensional arrays and how to implement a function matrix_equals that tests if two given matrices are equal (note that arrays cannot be compared for equality using the == operator). They will describe how array elements can be accessed either using indexing (the [] operator) or using pointer arithmetic. The sum of two matrices of the same size can be formed by adding together the entries that appear in the same locations (i.e., entrywise addition). Complete an implementation of the following prototype for a function that computes matrix addition. void negate_column (const int n, const int c, int a [] [3]); // negate_row(n, r, a) negates the entries in row r of the nx 3 matrix a // requires: n >= 1, 0 = 1, 0