A PHP Error was encountered

Severity: Warning

Message: Undefined variable $cate

Filename: views/tutorial.php

Line Number: 328

Backtrace:

File: /home/ittubixb/public_html/application/views/tutorial.php
Line: 328
Function: _error_handler

File: /home/ittubixb/public_html/application/controllers/Ittutorial.php
Line: 135
Function: view

File: /home/ittubixb/public_html/index.php
Line: 315
Function: require_once

/comments" style="z-index:9999;width:500px;">

What is Comments in C Language?

A constant is a fixed value that can't be change during the execution of the program. its value always fix.

There are two ways to define constant in C programming.

const keyword

#define preprocessor

C const keyword :-

The const keyword is used to define constant in C programming.

#include
int main(){
const float PI=3.14;
printf("The value of PI is: %f",PI);
return 0;
}

If you try to change the the value of PI, it will render compile time error.

#include <stdio.h>

int main(){
const float PI=3.14;
PI=4.5;
printf("The value of PI is: %f",PI);
return 0;
}

The #define Preprocessor :-

#define identifier value

#include <stdio.h>

#define LENGTH 10
#define WIDTH 5
#define NEWLINE '\n'
int main() {
int area;
area = LENGTH * WIDTH;
printf("value of area : %d", area);
printf("%c", NEWLINE);
return 0;
}

A PHP Error was encountered

Severity: Warning

Message: Undefined variable $cate

Filename: views/tutorial.php

Line Number: 354

Backtrace:

File: /home/ittubixb/public_html/application/views/tutorial.php
Line: 354
Function: _error_handler

File: /home/ittubixb/public_html/application/controllers/Ittutorial.php
Line: 135
Function: view

File: /home/ittubixb/public_html/index.php
Line: 315
Function: require_once

/comments" style="z-index:9999;width:500px;">

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