1-5.exer.c

#include <stdio.h>

/* Exercise 1-5. Modify the temperature conversion program to print the table in 
 * reverse order, that is, from 300 degrees to 0. 
 */
int main() {
    int fahr;

    for (fahr = 300; fahr >= 0; fahr = fahr - 20) {
        printf("%3d %6.1f\n", fahr, (5.0/9.0)*(fahr-32));
    }

    return 0;
}