I am getting errors in the polynomial equation x.I hav no idea whats wrong.This equation was provided.My code is as followed Code: #include<stdio.h> #include<stdlib.h> int main(void) { double x; double polynomial=3x^3-5x^2+6; [COLOR="Red"]/*This is giving me problem*/[/COLOR] x=2.55; printf("The value of polynomial is %lf\n",polynomial); system("pause"); return(EXIT_SUCCESS); }

1. Every programming language has its specific syntax. You cannot simply write mathematical expression, it is required to use some symbols called operators. 2. You have to assign value to x before you evaluate polynomial.

For MS Visual C++, the following will do: #include <math.h> //or <math> double x=2.55; double polynomial = 3*pow(x,3)-5*pow(x,2)+6

instead of polynomial=3x^3-5x^2+6; try using the "pow function" polynomial=3*pow(x,( 3))-5*pow(x,(2))+6; You could declare x as const int x=?; above your polynomial variable; logically it could work, but id google the pow function to make sure i wrote it right its been a while since ive used it.