text: #include <stdio.h>
  
  int main(void) {
  	int fahr, celsius, lower, upper, step;
  	float fahr1, celsius1;
  
  	fahr =  fahr1 = lower = 0;
  	upper = 300;
  	step = 20;
  
  	while (fahr1 <= upper) {
  		celsius1 = 5 * (fahr1 - 32) / 9;
  		printf("%3.0f\t%6.2f\n", fahr1, celsius1);
  		fahr1 = fahr1 + step;
  	}
  /*
  	while (fahr <= upper) {
  		celsius = 5 * (fahr - 32) / 9;
  		printf("%d\t%d\n", fahr, celsius);
  		fahr = fahr + step;
  	}
  */
  	return 0;
  }
  