JavaScript Tutorial: Learn Functions and Arrow Functions with Examples

 

JS Function programs collection

JS program to show the concept of arrow function

1. Normal function to return an object
<script>

 function getUser () 

{

return{

//taking the braces in newline terminates the return so the

//followed statement does not work

  name: "Radhe krishna", 

  age: 25 

};

 }

document.write(JSON.stringify(getUser()));

//it converts the object into string with the help of stringify()

</script>

JS program using arrow function to return an object

<script>

 getUser=()=> 

{

return{

//taking the braces in newline terminates the return so the

//followed statement does not work

  name: "Radhe krishna", 

  age: 25 

};

 }

document.write(JSON.stringify(getUser()));

//it converts the object into string with the help of stringify()

</script>

Or

<script>

 getUser=()=> 

(

//() tells JavaScript: “This is  returning an expression.

  {

//taking the braces in newline terminates the return so the

//followed statement does not work

  name: "Radhe krishna", 

  age: 25 

}

 );

document.write(JSON.stringify(getUser()));

//it converts the object into string with the help of stringify()

</script>

JavaScript Tutorial: Learn Functions and Arrow Functions with Examples

 

JS Function programs collection

JS program to show the concept of arrow function

1. JS program to print hi using arrow function

<script>

s=()=>//same as function s()

{

  console.log("hi");

}

s();

</script>

2. JS program to print sum of two numbers using arrow function

<script>

sum=()=>//same as function sum()

{

  var a=30,b=20;

  return a+b;

}

console.log(sum());

</script>

Or

traditional way to use function

<script>

function sum()

{

  var a=30,b=20;

  return a+b;

}

console.log(sum());

</script>

3.JS program to print sum of two numbers using arrow function and passing parameters.

<script>

sum=(a,b)=>//means the function sum is accepting two parameters

{

  return a+b;

}

console.log(sum(12,13));

</script>


Or

<script>

sum=(a,b)=> a+b;//means the function sum is accepting two parameters

console.log(sum(12,13));

</script>


Note:We can not use return with a+b e.g. return a+b. Js does not support.
Use under braces. This is called implicit return. It means returning value without using return.

SEE Computer Science: sub procedure program – QBASIC Sub Procedure Program Explained-2081 BS

 

QBASIC programs collection

Sub  procedure program [Triton model question-2081 set V q5]

DECLARE SUB SENDUP (S$)

E$ = "NPABSON"

Call SENDUP(E$)

End

Sub SENDUP (S$)

    For i = 1 To Len(S$) Step 1

        If i Mod 2 <> 0 Then

            EE$ = EE$ + LCase$(Mid$(S$, i, 1))

        Else

            EE$ = EE$ + UCase$(Mid$(S$, i, 1))

        End If

    Next i

    Print EE$

End Sub

SEE Computer Science: sub procedure program – QBASIC Sub Procedure Program Explained-2079 BS

 

QBASIC programs collection- 2079 B.S. GP

Sub and function procedure program [Triton model question]

'rem q9 A 2079 GP

declare sub perimeter(l,b)

declare function area(l,b)

Cls

Input "enter length and breadth"; l, b

Call perimeter(l, b)

Print "the area is"; area(l, b)

End

Sub perimeter (l, b)

    p = 2 * (l + b)

    Print "the perimeter is"; p

End Sub

Function area (l, b)

    area = l * b

End Function

SEE Computer Science: Triton Model Set II – QBASIC Sub Procedure Program Explained

 

QBASIC programs collection- Triton model sets-II 

Sub procedure program

DECLARE SUB SERIES ( )

Cls

Call series

End

Sub series

    A$ = "NEPAL"

    B = 1

    For I = Len(A$) To 1 Step -2

        If B <> 3 Then

            Print Mid$(A$, B, I)

        Else

            Print Mid$(A$, 1, I)

        End If

        B = B + 1

    Next I

End Sub

Qbasic program to use sub and procedure and to find volume and TSA | SEE computer science procedure program

 

QBasic programs collection-Especially for SEE (Grade-10)

QBasic procedure based programming  questions asked in Triton's model questions

QBasic programs [Triton's model set]

'q9 triton SEE model set set II

declare function volume(l,b,h)

declare sub TSA(l,b,h)

Input "enter l,b,and h"; l, b, h

Call TSA(l, b, h)

Print "the volume is"; volume(l, b, h)

End

Function volume (l, b, h)

    volume = l * b * h

End Function

Sub TSA (l, b, h)

    total_surface_Area = 2 * (l * b + b * h + l * h)

    Print "tsa="; total_surface_Area

End Sub

Qbasic program to read the contents of data file record.dat and to print on screen | SEE computer science datafile program

QBasic programs collection-Especially for SEE (Grade-10)

QBasic Datafile programming of questions asked in Triton's model questions

QBasic program read the contents of datafile and display on screen [Triton's model set]

 

'q9(b) triton SEE model set set II

Open "record.dat" For Input As #11

Cls

c = 0

While Not EOF(11)

    Input #11, sno, name$, address$, tel, email$

    If LCase$(Right$(email$, 9)) = "yahoo.com" Then

        c = c + 1

        Print name$, address$, email$

    End If

Wend

Print "total records having email is="; c

Close #11

End

c program to initialize a string with examples

 

 string programs in C

 // program to initialize a string in C

#include <stdio.h>

#include<string.h>

void main ()

{

char string[] = {'c', 'o', 'm', 'p', 'u', 't', 'e', 'r'};

printf("%s", string);

getch();

}

output:-

c program to reverse a string using function and pointer | pointer examples in c | program with pointer to character function

 

Pointer and string programs in C

 // program to reverse a string using function where we use pointer to character

//WAP to reverse a string using(strrev()) function.Pass string as parameter and return its reverse

#include <stdio.h>

#include<string.h>

#include<conio.h>

char *stringrev(char string[]);

/* function named stringrev() that accepts a string and returns

a char(i.e. pointer to character/string)

int main()

{

    char name[100];//string declaration

    printf("enter string\n");

    scanf("%[^\n]",name); 

    printf("reverse=%s\n",stringrev(name));//prints the name

    getch();

    return 0;

}

char *stringrev(char string[])

{

    strrev(string);

    return string;

}

c program to use global variables | extern examples in c | C program to use multiples files using extern

 

global variables in C

 /* program to input a number from a different file using external variable and print that

*/

step1:

in devc++,

->click file menu

->click new

->project

-> click console application

->choose c project

->click ok

step 2

under 'main.c' write the code

#include <stdio.h>

extern int a;

void input();

int main() 

{

input();

printf("a=%d",a);

return 0;

}

-------

step 3

->right click the project folder on left side

->click new file as shown above . You can give a name you like

 Here we have taken as untitled3.c

->write the following code

#include<stdio.h>

int a;

void input()

{

 scanf("%d",&a);

}

->save it

->run the program