C language,,, Please help me with the 1-D array with Functions .. DO NOT USE FLOAT

Task # 2: Consider a closed polygon with n distinct corners: (xo, yo), (xi, yi), Example . . . . (Xn-l, ya-l) (X. Ys)Note: The last corner is the same as the first corner (x,y (S, yj) (x3. The area of such a polygon can be computed by the formula: 1 -1(Xi + Xi-1)(yi-yi-1)1 2 area