#include<stdio.h> 
#define		STEP	2.5
#define		START	-50.0
#define		STOP	50.0001
main()
{
float F;
float C;
C=START;
while(C<=STOP ){
	F=9.0*C/5+32.0;
	printf("%6.1f\t%6.1f\n",C,F);
	C=C+STEP;
	}
}