//
//  main.c
//  prog5_integral
//
//  Created by James Moriarty on 10/24/16.
//  Copyright © 2016 James Moriarty. All rights reserved.
//

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include "prog5_functions.h"

int main() {
    //a low point, b hi n is number of trapezoids junk clears line
    char junk;
    float a,b,n;
    int nval;
    //char yn;
    double sum=0;

    while(n<1)
        do{
            printf("Enter endpoints of interval to be integrated <low hi>: ");
            nval=scanf("%f %f", &a, &b);
            if (nval!=2)
                printf("Error Improperly Formatted input");
            if (a>b)
                printf("Error: low < hi \n");
            else
                printf("\nEnter the number of trapezoids to be used: ");
            scanf("%f", &n);
            if (n<1)
                printf("\nError numT must be >1\n");
            if (n>=1)
                break;
            // other wise clear line

            do {
                scanf("%c", &junk);
            } while (junk != '\n');
           } while (n<1);// sets program to rerun if n<1

    //
    sum = integrate (a,b,n);
    return sum;