1 #include<stdio.h> 2 3 #define UPPER 300 4 #define LOWER 0 5 #define STEP 20 6 void main() 7 { 8 printf("fahr celsius "); 9 for (int fahr = LOWER; fahr <= UPPER; fahr += STEP) 10 { 11 printf("%3d %6.1f ", fahr, (5.0 / 9.0)*(fahr - 32)); 12 } 13 }