What does the following code print when it is invoked from the command line with

Question

What does the following code print when it is invoked from the command line with funone. Be reasonably careful with the spacing. Note that blanks is a built-in function which generates a string with the specified number of spaces. function funone() a = 0: indent(a, 'hello'): funtwo(a + 3): indent (a, 'ciao'): funthree(a + 3): indent(a, 'done'): end function funtwo(b) indent(b, 'intwo'): funthree(b+3): indent(b, 'outtwo'): end function funthree(a) indent(a, 'inthree') end function indent(b, msg) fprintf ('%d%s %s ', b, blanks(b), msg): end

Explanation / Answer

Executing statements in function funone():

1.   Variable a is initialized to 0.

2.   Function call indent(a, 'hello') => indent(0, 'hello')
  
   2.1       With in indent function:
          
           Prints b value followed by b spaces and then string. As b is 0
          
           Output: 0 hello
          
          
3.   Function call funtwo(a+3) => funtwo(0+3) => funtwo(3)

   3.1       With in the funtwo function:
          
           3.1.1   Calls indent function: indent(3, 'intwo')
                  
                   3.1.1.a       With in indent function:
                              
                               Prints b value followed by b spaces and then string. As b is 3
                              
                               Output: 3    intwo
                              
           3.1.2   Calls funthree function: funthree(3+3) => funthree(6)

                   3.1.2.a       With in funthree function:
                              
                               Calls indent function => indent(6, 'inthree')
                              
                               Output: 6       inthree
                              
           3.1.3   Calls indent function: indent(3, 'outtwo')
                  
                   3.1.3.a       With in indent function:
                              
                               Prints b value followed by b spaces and then string. As b is 3
                              
                               Output: 3    outtwo
  
  
4.   Function call indent(a, 'ciao') => indent(0, 'ciao')
  
   4.1       With in indent function:
          
           Prints b value followed by b spaces and then string. As b is 0
          
           Output: 0 ciao
          

5.   Function call funthree(a+3); => funthree(0+3) => funthree(3)

   5.1       With in the funthree function:
          
           5.1.1   Calls indent function: indent(3, 'inthree')
                  
                   5.1.1.a       With in indent function:
                              
                               Prints b value followed by b spaces and then string. As b is 3
                              
                               Output: 3    inthree
                              

6.   Function call indent(a, 'done') => indent(0, 'done')
  
   4.1       With in indent function:
          
           Prints b value followed by b spaces and then string. As b is 0
          
           Output: 0 done                              
          
          
______________________________________________________________________________________________________________________________

Hence the final output will be :

0 hello
3    intwo
6       inthree
3    outtwo
0 ciao
3    inthree
0 done

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.