Computer Programming

Question

Consider this excerpt of code that converts a temperature from Fahrenheit to Celsius:

double fTemp = 75.2;

double cTemp;

cTemp = (5 / 9) * (fTemp - 32);

 

1. What is the problem with this code that will cause cTemp to be incorrect?

2. How can you fix the issue using type-casting?

 

Answer 1

1. The problem with the code is that 5 / 9 will give you the integer 0 in the C language, because 5 and 9 are both integers.

2. The way to fix it is to cast 5 as a double, like this: (double) 5 / 9.