c program

 #include <stdio.h>

/* print Fahrenheit-Celsius table

for fahr = 0, 20, ..., 300 */

int main(void)

{

float fahr, celsius;

int lower, upper, step;

lower = 0;

upper = 300;

step = 20;

/* lower limit of temperature table *1

1* upper limit *1

1* step size */

fahr = lower;

while (fahr <= upper)

  {

celsius = 5.0/9.0 * (fahr-32.0) ;

printf("%3.0f \t %6.1f\n", fahr, celsius);

/*

   %d print as decimal integer

   %6d print as decimal integer, at least 6 characters wide print as floating point

   %6f print as floating point, at least 6 characters wide

   %.2f print as floating point, 2 characters after decimal point

                   %6.2f print as floating point, at least 6 wide and 2 after decimal point

*/

fahr = fahr + step;

}

}