#include <stdio.h>

#define PIPE_LEN 10
#define INSIDE_TEMP 20.0f
#define OUTSIDE_TEMP -20.0f

int main()
{
	float a[PIPE_LEN], b[PIPE_LEN], air_out, air_in;
	int i;

	for (i = 0; i < PIPE_LEN; i++) {
		a[i] = INSIDE_TEMP;
		b[i] = OUTSIDE_TEMP;
	}

	for (;;) {
		for (i = 0; i < PIPE_LEN; i++) {
			float mid;

			mid = (a[i] + b[i]) / 2;
			a[i] = b[i] = mid;
		}

		air_out = a[0];
		air_in = b[PIPE_LEN - 1];

		for (i = 0; i < PIPE_LEN - 1; i++) {
			a[i] = a[i + 1];
			b[PIPE_LEN - 1 - i] = b[PIPE_LEN - 2 - i];
		}

		a[PIPE_LEN - 1] = INSIDE_TEMP;
		b[0] = OUTSIDE_TEMP;

		printf("\n% 6.2f\t|", air_out);

		for (i = 0; i < PIPE_LEN; i++)
			printf(" % 6.2f ", a[i]);

		printf("| % 6.2f\n% 6.2f\t|", INSIDE_TEMP, OUTSIDE_TEMP);

		for (i = 0; i < PIPE_LEN; i++)
			printf(" % 6.2f ", b[i]);

		printf("| % 6.2f\n", air_in);

		printf("Naudingumas: %6.2f%%", (air_in - OUTSIDE_TEMP) / (INSIDE_TEMP - OUTSIDE_TEMP) * 100);

		getchar();
	}
}