#include <stdio.h>
int main()
{
int fahr,calsius;
int lower,upper,step;

lower = 0;
upper = 300;
step = 20;
fahr = lower;
while(fahr <= upper)
{
celsius = 5*(fahr- 32)/9;
printf("%d \t %d\n",fahr,celsius);
fahr = fahr + step;
}
}