C programing:

Modify the program to compute the conversion from Fahrenheit to Celsius in a function called tocelsius(). The prototype for this function is:

 float tocelsius(float fahrenheit); /* Given: a temperature reading in degrees Fahrenheit Returns: the temperature in degrees Celsius */ 

Modify the driver, main(), to prompt the user to enter a temperature in Fahrenheit, convert the value using the function and print the result. The driver should loop asking the user for input until a special data value is entered. Since 0 is a valid Fahrenheit temperature, we need something else. Physics tells us that no temperature can be lower than absolute zero (-273 degrees C, or -459 degrees F), let's use -500 as the special data value to terminate Fahrenheit input.

My code for convert F to C

#include void main() { float F,C; printf("F:"); scanf("%f",&F); C = (F-32)*5/9; printf("C:%.2f ",C); }