Displays a table of Fahrenheit to Celsius and Celsius to Fahrenheit conversions - in a nice ASCII box :)

temp-converter

#include <stdio.h>

/* print Fahrenheit-Celsius table
	for fahr = 0, 20, ..., 300; floating point version */

	print_table_top()
	{
		printf("%c", 201);
		print_line(24);	
		printf("%c\n", 187);
	}
	
	print_table_bottom()
	{
		printf("%c", 200);
		print_line(24);
		printf("%c\n", 188);
	}
	
	print_line(length)
	{
		int i;
		for(i = 0; i <= length; i++)
			printf("%c", 205);
	}	
	
main()
{
	float fahr, celsius;
	int lower, upper, i;
	
	lower = 0;		/* lower limit of temperature table */
	upper = 300;	/* upper limit of temperature table */

	printf("\n\nFahrenheit to Celsius Conversion Table\n");	
	print_line(37);
	printf("\n\n");
	
	print_table_top();
	
	for(fahr = 0; fahr <= upper; fahr = fahr + 20)
		printf("%c  %3.0f %c%s %6.1f %c%s  %c\n", 186, fahr, 167, "F is ", (5.0 / 9.0) * (fahr - 32.0), 167, "C.", 186);
	
	print_table_bottom();
	
	printf("\n\nCelsius to Fahrenheit Conversion Table\n");
	print_line(37);
	printf("\n\n");
	
	print_table_top();
		
	for(celsius = 0; celsius <= upper; celsius = celsius + 20)
		printf("%c  %3.0f %c%s %6.1f %c%s  %c\n", 186, celsius, 167, "C is ", ((9.0 / 5.0) * celsius) + 32.0, 167, "F.", 186);	

	print_table_bottom();	
		
}