1.3 for语句

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int fahr;
 5     for (fahr = 0;  fahr<= 300; fahr=fahr+20)
 6     {
 7         printf("%3d %6.1f\n", fahr, (5.0 / 9.0)*(fahr - 32.0));
 8     }
 9     return 0;
10 }