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Hello and welcome to the golden programming language course in the pedigree session, we talked about

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returning multiple values.

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And in this session, we want to talk about the others fonctions concept.

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Function arguments.

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Ingo language, the parameters passed to a function are called actual parameters, various the parameters

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received by a function or can't form on parameters by default, go language use can't by value method

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to pass arguments in function go language support.

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Two ways to pass arguments to your function First is card by value and second is called by reference.

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Caused by value, the call by value method of passing our humans to a function copies the actual value

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of an argument into the four parameter of the function.

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In this case, changes made to the perimeter are inside the function have no effect on the arguments.

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By default, go programming language users can't buy value to pass arguments in general.

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This means that code within the function cannot alter arguments used to call the function.

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Now go to this code and illustrate how to use card by value.

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First, creating a swap function that takes two parameter and changes, then together.

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Fine, for example, swept

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the X and Y is in type and return type, is it?

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First creative and Van Claire Typekit did.

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And said the venue of its intent.

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Ten equals X and put Y value already then into X X equals Y and now put tenth into Y Y equals 10th and

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return 10.

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Variable value retailer can reformat the code and save the project.

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Now create the main function for involved the function, so go to the main function.

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First, creating local variable definition and initialization for the example that A.

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E equals a hundred and go to the next line and second variable definition Van B Typekit is into gain

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equals 200.

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These play these very the B force swap if F.

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The four swap a equals persons, the and B equals Person D and said they were a.

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Now calling it soft function to slap these values.

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Swap and pass value that A and B to it, A and B.

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Now displayed these very able after swap if they're after swap.

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A gladiator equals personality.

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And B, that evil equals personality and set the very ideals A and B again reformat the code, save

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the project and execute the code.

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Now we can see the output before Super eight equals 100 and B equals 200.

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And after Super eight equals 100 and again, B equals 200.

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It shows that there is no change in the values, although they had been changed inside the function.

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In this parameter passing method, values of actual parameters are copied to functions for more parameters,

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and the two types of parameters are stored in different memory locations.

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So any changes made inside functions are not reflected in actual parameters of the color.

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Now go to a slide and continue.

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Second, call by reference, the code by reference missal of passing our unions to a function copies

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the address of an argument into the form on perimeter inside the function.

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The address is used for access to actual argument used in the Con.

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This means that changes made to the perimeter affect the past argument to pass the venue by refis.

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Argument pointers are passed to the function just like any other value.

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Now go to this school and illustrate how to use called by reference.

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First to your last go.

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They have the project and ready to ride.

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First, we need to declare the function parameters as points four times as in the following function

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swap, which exchange the values of the two integer variables, pointing to why its arguments, for

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the example formed.

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Swapped and set the variable X and the type of it is prone to treat as received.

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And very even why Asterix and the time of the this point of into.

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Defined the 10 variables that can talk about it ain't go to the next long and save the value and address

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X terms equals x three x x.

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And put Y into X cone to X equals to Y.

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Now put 10 variable into Y value that as six Y equals 10.

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Reformat the code and save the project, now, create the main function for each of the search function,

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so go to the main function first, creating local variable definition and initialization for the example,

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via a m equals a 100 and go to the next line.

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That be it equals 200 now this these variable default swap for the example that a

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default swap A equals Person D and the equals Person D and set by either A and B, you go to the next

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line and calling the function to swap the values, swap and set the variable A and B as a pointer and

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assign a common Anderson B.

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And percent, a indiqué pointer to a means address of variable A..

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And Ampersand B indicates pointing to A to B means ad to solve variable B now displayed these variable

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after slope.

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If F after such a equals, Person D and B equals first in the set.

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The letter A and B.

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Now reformat the call, save the project and execute the program.

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Now we can see the output before slap a equals a hundred and B equals 200.

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But after slap a equals 200 and B equals 100, it shows that the change has reflected outside the function

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as the only kind of value that changes do not reflect outside the function.

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Both the actual and formal parameters refer to the same locations.

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So any changes made inside the functions are actually reflected in actual parameters of the color in

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order not to prolong the time of decision.

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We will finish sheet and we will continue the content in the next session.

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Goodbye.