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#include <stdio.h>

int ftoc(int lower, int upper, int step);

/* print Fahrenheit-Celsius table */
int main()
{
	ftoc(0, 300, 20);
	return 0;
}

/* ftoc:  print Farenheit-Celsius table */
int ftoc(int lower, int upper, int step)
{
	float fahr, celsius;

	fahr = lower;
	while (fahr <= upper) {
		celsius = (5.0/9.0) * (fahr-32.0);
		printf("%3.0f %6.1f\n", fahr, celsius);
		fahr = fahr + step;
	}

	return 0;
}