solutions/The C Programming Language/1.15.c

#include <stdio.h>

// creating a function to convert celsius to fahrenheit

double to_fahr(double celsius)
{
	return (celsius * 9.0 / 5.0) + 32.0;
}

main()
{
	float fahr, celsius;
	int lower, upper, step;

	lower = 0;
	upper = 300;
	step = 20;

	celsius = lower;
	printf("%10s %7s\n", "Fahrenheit", "Celsius");
	while (celsius <= upper)
	{
		printf("%10.0f %7.1f\n", to_fahr(celsius), celsius);
		celsius = celsius + step;
	}
}