#include <stdio.h>
float conv(float f);
main(){
    float fahr, celsius;
	float lower, upper, step;
	lower = 0;
	upper = 300;
	step = 20;
	fahr = lower;
	while(fahr <= upper){
		celsius = conv(fahr);
		printf("%3.0f\t%6.1f\n", fahr,  celsius);
		fahr = fahr + step;
		return 0;
	}
float conv(float f, float celsius){
	celsius = (5.0 / 9.0) * (fahr - 32.0);
	return celsius;
}
}