with open('celcius.dat', 'r') as fIn, open('fahrenheit.dat', 'w') as fOut:
    for line in fIn:
        fahrenheit = 9.0 / 5.0 * float(line) + 32
        fOut.write("%.1f\n" % fahrenheit)
You can control the number of decimals in the formatting clause in the write statement.
 
        
             
        
        
        
I guess the word in the blank is Standardization.
Human systems integration (HSI), a supportability issue that every program should consider, addresses such factors as accessibility, visibility, testability, and Standardization.
 
        
             
        
        
        
Answer: keeps confidential documents secure,
displays a GUI, allocates the computer's resources, and retrieves files
Explanation:
The operating system can be defined as the software installed in the system that provides the information and services to the users by controlling the hardware, software resources, and regulates the computer programs. It runs the applications and programs in the system, displays the graphic user interface for the services, stores, manipulates, and retrieves files. It prevents the unauthorized access to the data and programs by using passwords thus provides the security to the system and documents. 
 
        
             
        
        
        
Answer:
#include <stdio.h>
int fib(int n) {
  if (n <= 0) {
    return 0;
  }
  if (n <= 2) {
    return 1;
  }
  return fib(n-1) + fib(n-2);
}
int main(void) {
  for(int nr=0; nr<=20; nr++)
    printf("Fibonacci %d is %d\n", nr, fib(nr) );
  return 0;
}
Explanation:
The code is a literal translation of the definition using a recursive function.
The recursive function is not per se a very efficient one.