code1 code2 if (a_in=0 or b_in=0) then { r=0; } else { a=a_in; n=b_in; r=0; } while (n !=0 ) { r=r+a; n=n-1; } } r_out =r; if (a_in=0 b_in_0) then { r=0; } else { a = a_in; n = b_in; r = 0; op: r= r + a; n = n - 1; if ( n = 0) then { goto stop; }
code1 code2 if (a_in=0 or b_in=0) then { r=0; } else { a=a_in; n=b_in; r=0; } while (n !=0 ) { r=r+a; n=n-1; } } r_out =r; if (a_in=0 b_in_0) then { r=0; } else { a = a_in; n = b_in; r = 0; op: r= r + a; n = n - 1; if ( n = 0) then { goto stop; }
Chapter5: Looping
Section: Chapter Questions
Problem 7E
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Question
Which one do you consider more efficient? Why?
code1 |
code2 |
if (a_in=0 or b_in=0) then { r=0; } else { a=a_in; n=b_in; r=0; } while (n !=0 ) { r=r+a; n=n-1; } } r_out =r;
|
if (a_in=0 b_in_0) then { r=0; } else { a = a_in; n = b_in; r = 0; op: r= r + a; n = n - 1; if ( n = 0) then { goto stop; } else { goto op; } } stop : r_out = r ;
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