Difference between revisions of "Scilab/C4/User-Defined-Input-and-Output/English-timed"

|Welcome to the spoken tutorial onFile handling using Scilab.  

| In this tutorial, we will learn  

|'''Input Function '''

|'''Formatting the Output'''

|'''save function '''

|'''load function '''

|For Demonstration i am using Ubuntu Linux12.04 operating system with Scilab version 5.3.3 installed  

| You should have Basic knowledge of '''Scilab.'''  

| If not, for relevant spoken tutorials on Scilab  please visit '''spoken hyphen tutorial dot org'''  

| The '''input''' function can be written in two ways .

| First ,x= input into brackets message to display   

|Second,x= input into brackets ("message to display","strings").

| In the second example, the second argument is '''“string”.'''

|So the output is a character string, which is the expression entered using the keyboard.  

|Switch to the '''Scilab Console''' window and type,  

|'''x is equal to input''' open bracket inside double quotes '''Enter your age''' close the double quotes close the bracket and press enter.

|Type 25 and press enter

|| Now type -->'''y is equal to input ''' into bracket into double quotes '''Enter your age''' close the double quotes comma again inside double quotes write '''string''' close the bracket and press enter

|| type 25 and press enter

| -->'''typeof into brackets x'''and press enter

|similarly; '''typeof(y)''' and press enter

||You can see it yourself, that the first answer stored in x is of type '''constant''' and  

|| It is an interface for C-coded version of '''printf''' function.  

| Let us see an example for this.Switch to the console  

| Type-->'''mprintf into bracket into quotes type iteration percent i comma result is colon slash n alpha equal to percentf comma 33 comma 0.535 '''close the bracket,

| Here 33 will be displayed in place of '''percent i '''and point 535 will be displayed in place of''' percent f''' as a flow, press enter

| This will give the output as  '''At iteration 33, Result is alpha is equal to 0.535000. '''  

| In '''print f''' open bracket into quotes '''value of x is equal to percentage d is taken as a constant comma while value of y is equal to percent s is taken as a string '''close the quotes comma '''x '''comma '''y '''close the bracket  

|In the above example percentage d is used to insert a constant data stored in variable x and  

| '''percentage s''' is used to insert a '''string''' data stored in variable y. press enter you see the output  

| Now, let us discuss the use of save and load command.  

|To quit '''Scilab midway''' through a calculation and to  

|| continue to a later stage type '''save thissession'''

| The purpose of '''save''' and '''load''' function are  

||The '''save()''' command saves all the '''scilab''' current variables in a binary file.  

| The file can be given either by its paths or by its descriptor previously given.  

| '''save into bracket fd''' saves all the current variables in the file defined by the descriptor fd.  

| '''save(filename,x,y) or save(fd,x,y)''' saves only named variables x and y.  

||Let us see an example to illustrate the save and load commands usage.  

||Switch back to the console . Let us define two matrices say a and b  

||-->'''a = eye of (2,2)''' and press enter

|Type;'''b=ones(a)''' and press enter

|Clear the console using clc command. Now type  

|-->''' save space matrix dash a dash b'''  

| or it can also be written as  

| '''save ''' into brackets into quotes '''matrix dash a dash b dot dat''' close the quotes comma ''' a''' comma ''' b''' close the braket and press enter

|| This saves the values of variables in a binary file '''matrix dash a dash b dot dat''' in the present working directory.  

| Before this, let us clear the variables '''a and b '''

| Type  '''clear a space b ''' press enter

| ->'''a  '''  

 

 

 

|'''b'''

| Now let us load back the values from the binary files in these variables a and b using the load command.  

|Type ''' Load '''into bracket into quote '''matrix dash a dash b dot dat''' close the quotes comma into quotes '''a comma''' into quotes '''b''' close the bracket and press enter

| Type >a And-->b  

| In this tutorial we learnt -  

 

 

 

| Input Function using '''input''' command  

| Formatting the Output using''' mprintf''' command  

| '''Save Function '''

| '''Load Function'''  

| Watch the video available at the link shown below  

| It summarises the Spoken Tutorial project  

||If you do not have good bandwidth, you can download and watch it  

||The spoken tutorial Team

||Conducts workshops using spoken tutorials  

||Gives certificates to those who pass an online test  

||For more details, please write to conatct@spoken-tutorial.org  

|Spoken Tutorial Project is a part of the Talk to a Teacher project  

|More information on this mission is available at  http://spoken-tutorial.org/NMEICT-Intro

|This is Anuradha Amrutkar from IIT Bombay signing off.