Section 12: Subroutines190
Keystrokes Display    
ALPHA RATE? ALPHA 
  05TRATE?    
   
PROMPT ( Σ+ ) 
  06 PROMPT    
   
ALPHA TIME? ALPHA 
  07TTIME?    
   
PROMPT ( Σ+ ) 
  08 PROMPT    
   
 ×  
  09 *    
   
g RTN 
  10 RTN    
  End of subroutine A.
g LBL 
       
   
ALPHA B ALPHA 
  11 LBL B    
  Local label B.
ALPHA DISTANCE? ALPHA 
  12TDISTANCE?    
   
PROMPT ( Σ+ ) 
  13 PROMPT    
   
ALPHA TIME? ALPHA 
  14TTIME?    
   
PROMPT ( Σ+ ) 
  15 PROMPT    
   
 ÷  
  16 /    
   
g RTN 
  17 RTN    
  End of subroutine B.
g LBL 
       
   
ALPHA C ALPHA 
  18 LBL C    
  Local label C.
ALPHA 
       
   
DISTANCE? ALPHA 
  19TDISTANCE?    
   
PROMPT ( Σ+ ) 
  20 PROMPT    
   
ALPHA RATE? ALPHA 
  21TRATE?    
   
PROMPT ( Σ+ ) 
  22 PROMPT    
   
 ÷  
  23 /    
   
g GTO · · 
  00 REG 33    
  End of subroutine C.
Now run the program to solve the following problem:
On may 26, 1969 the Command and Service Module of Apollo X carried U.S. astronauts Stafford, Cernan, and Youngh at a rate of 24,791 miles per hour (the fastest speed at which any human has traveled). How far would the module travel in 2.5 hours?
  D = R T = 24,791 × 2.4