C language please help

1. (a) Define a structure of type complex consisting of two floating-point members, called real and imaginary (b) How will you find the size of the struct as mentioned in (a)? (c) Declare a variable x that is a structure of type complex. Initialize each member of the variables as follows: real: 24.5 imaginary: 34.5; (d) Declare a one-dimensional 1000-element array called complexArray whose elements are structures of type complex. Write expression for the members of the 100h array element (i.e., element number 99)