How to write a C programme for this?

7. [lWrite a program to estimate the real roots of a cubic polynomial function using incremetal search. f(a) Subinterval f(b) -Original interval A cubic polynomial has the fomm y f(-r ar.a, The following are the refinements of the program in pseudo code. main: read coefficients, interval endpoints a and b, and stop aize compute the number of subintervals, n set k to while kn-1 compute left subinterval endpoint compute right subinterval endpoint check_roota(lert,right, coetricianta) increment k by 1 check xoots(b,,coeffieients) check_roots (left,right, coefficients): set f-left poly(left, coefficients} se _right to poly (right, coetticianta) 1f f 1eft is near zero print root at left endpoint else i iattright print roor at midpoint of subimerval poly(x,0,1,2.a3): return aox3 + a1x2 a a3