Please Use C program to solve this

5. Define a function void setDiagItems (int n, int m[n][n], int flag) that sets the upper or lower diagonal elements of 2D array, m to zero (0) based on the value of flag as given below. Here, m represents a square matrix with n number of rows and columns. See the sample input-output below. [8] when flag = 1 when flag = 0 2 5 3 2 0 0 2 5 3 2 5 3 4 9 1 4 9 4 9 1 091 7 8 2 7 8 2 7 8 2 0 0 2 0