#include <stdio.h>

#define MAX_FORMULA_SIZE 100

int main( void ) {

char formula[100];

int lower;

int upper;

int partitions;

double move;

int x;

double width;

double length;

double answer;

printf("Enter formula in terms of x: ");

scanf("%s", &formula);

printf("Enter lower number: ");

scanf("%i", &lower);

printf("Enter upper number: ");

scanf("%i", &upper);

printf("Enter number of partitions from %i to %i: ", lower, upper);

scanf("%i", &partitions);

move = (upper - lower) / partitions;

for(x = lower; x <= upper; x += move) {

width = move;

length = formula;

answer += (width * length);

}

printf("ANSWER: %f", answer);

return 0;

}

i want the counter variable "x" to be entered into the formula each time and calculate the answer... how do i do this? thanks.