PROGRAM TO FIND THE INTEGRAL VALUE USING TRAPEZOIDAL RULE

#define f(x) 1.0/(1+x*x)
main()
{
int n;
float a,b;
float trapz(float,float,int);
printf("Enter the values of a,b and n\n");
scanf("%f%f%d",&a,&b,&n);
printf("Integral value of f(x) by trapezoidal rule:%f\n",trapz(a,b,n));
}