Cuad Gaus

//CuadGaus

#include <stdio.h>
#include <conio.h>
#include <math.h>
float I_Gauss(float,float,int);
float f(float);
void main(void)
{
   clrscr();
   float ls,ld;
   int n=3;

   printf("\nIntroduceti ls : ");
   scanf("%f",&ls);
   printf("\nIntroduceti ld : ");
   scanf("%f",&ld);

   printf("\nSolutia este = %f",I_Gauss(ls,ld,n));
   getch();
}
float I_Gauss(float ls,float ld,int n)
{
   float sum;
   int i;
   float A[3]={5./9,8./9,5./9};
   float U[3]={0.7745966692,0,-0.7745966692};
   sum=0;
   for(i=0;i<n;i++) // sunt >n< treceri
   sum=sum+0.5*A[i]*(ld-ls)*f(0.5*(ld-ls)*U[i]+0.5*(ls+ld));
   return sum;
}
float f(float x)
{
  return 2*x;
  return exp(x);
}