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+--- Thread: syntax flexibility (programming) of xcas on HP-Prime (/thread-12383.html)
syntax flexibility (programming) of xcas on HP-Prime - compsystems - 02-08-2019 09:23 PM
Hello, HP-Prime users, the syntax flexibility of xcas makes you like it a lot, some users according to the context they like, at the beginning and at the end of the blocks with symbols {...}, others in a more explicit way is to say for example to define a function with words, Func..EndFunc
According to the following set of definitions, Xcas supports 8 different ways to define a function, it is not governed by a particular style, of course the compilation is done in ~ c++
PHP Code:
/// c++ style
f1( x ) :=
{
local k;
k := 5;
return x * k;
};
f2( x ) :=
begin
local k;
k := 5;
return x * k;
end;
function f3( x )
begin
local k;
k := 5;
return x * k;
end;
function f4( x )
local k;
k := 5;
return x * k;
ffunction;
function f4a( x )
local k;
k := 5;
return x * k;
end;
f5 := function( x )
local k;
k := 5;
return x * k;
end;
// Pascal style
function f6( x )
begin
var k;
k := 5;
return x * k;
end;
// TI68k (ti89 tiv200) style
:f7( x )
:Func
: Local k
: 5 → k
: Return x * k
:EndFunc
// python style
// ...
result of compilation
PHP Code:
nameFunction
(x)->
{ local k;
k:=5;
return(x*k);
}
test
f1(3); f2(3); f3(3); f4(3); f5(3); f6(3); ClrIO [enter] returns 15, 15, 15, 15, 15, 15
test online
Different ways to define a function.
RE: syntax flexibility (programming) of xcas on HP-Prime - compsystems - 02-09-2019 01:39 PM
Another example for IF-THEN-ELSE-END
PHP Code:
function AgeVote( )
begin
local Age;
assume( Age, integer );
DispG; ClrIO; ClrGraph;
printf( "How old are you?" );
input( Age );
if Age ≥ 18 then
printf( "Go vote!" );
else
printf( "Sorry, not yet" );
end_if
return Done;
end:;
AgeVote( ) :=
{
local Age;
assume( Age, integer );
DispG; ClrIO; ClrGraph;
printf( "How old are you?" );
input( Age );
if (Age>=18) printf("Go vote!");
else printf("Sorry, not yet");
return Done;
}:;
AgeVote( ) :=
{
local Age;
assume( Age, integer );
DispG; ClrIO; ClrGraph;
printf( "How old are you?" );
input( Age );
if (Age >= 18)
{
printf( "Go vote!" );
}
else
{
printf( "Sorry, not yet" );
}
return Done;
}:;
function AgeVote1( )
begin
local Age;
assume( Age, integer );
DispG; ClrIO; ClrGraph;
printf( "How old are you?" );
input( Age );
if (Age >= 18)
begin
printf( "Go vote!" );
end
else
begin
printf( "Sorry, not yet" );
end
return Done;
end