#include <stdio.h>
#include <math.h>
#include <stdlib.h>

double f(double a, double b, double c, double x)
{
  return (a*pow(x,2.0) + b*x + c);       
}

int main(void)
{
    double a,b,c,x;
    a = 2.0;
    b = 3.0;
    c = 4.0;
    x = 2.0;
   
    printf("\n%.1f*%.1f^2 + %.1f*%.1f + %.1f = %.1f\n",a,x, b, x, c, f(a, b, c, x));
    system("pause");
    return 0; 
}