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

int n1, n2;
float p[10], q[10];

float f(float x)
{
    float d = p[0];
    for (int i = 1; i<=n1; i++) d = d*x + p[i];
    return d;
}
float g(float x)
{
    float d = q[0];
    for (int i = 1; i<=n2; i++) d = d*x + q[i];
    return d;
}
float tichphan(float (*f) (float), float a, float b)
{
    int n = 1000;
    float h = (b-a)/n;
    float s = (f(a)+f(b))/2;
    for (int i = 1; i<n; i++) s+= f(a+i*h);
    return s*h;
}
int main()
{
    char tt;
    int i, j;
    float a,b;
    printf("\nNhap ham f(x): ");
    printf("\nNhap bac cua ham f(x): ");
    scanf("%d",&n1);
    for ( i = 0; i<=n1; i++)
    {
        printf("A[%d] = ",i);
        scanf("%f",&p[i]);
    }
    printf("\nNhap ham g(x): ");
    printf("\nNhap bac cua ham g(x): ");
    scanf("%d",&n2);
    for ( i = 0; i<=n2; i++)
    {
        printf("A[%d] =",i);
        scanf("%f",&q[i]);
    }
    printf("\n%d %d",n1,n2);
    while (1)
    {
        printf("\nNhap can a, b :");
        scanf("%f%f",&a,&b);
        printf("\nTich phan ham f(x) = %f",tichphan(f,a,b));
        printf("\nTich phan ham g(x) = %f",tichphan(g,a,b));
        printf("\nBan co muon tiep tuc (c/k)?");
        tt = getch();
        if (tt!='c') break;
    }
    return 0;


}