fahr/cels with comments

#include <stdio.h>

main()

int fahr, celsius;

/* declaration */

int lower, upper, step;

/* declaration */

lower = 0;

/* assignment statement */

upper = 300;

/* assignment statement */

step = 20;

/* assignment statement */

fahr = lower;

/* assignment statement */

while (fahr <= upper)

celsius = 5 * (fahr-32) / 9;

 /* variable equals 5 times

(variable minus-32)

over 9*/

printf("%d\t%d\n", fahr, celsius);  /* print string of characters

 after first ("%d..."), and

printf specs %d, %f, etc*/

fahr = fahr + step;

/* next step along loop */