Sunday 28 June 2020

Sum of lower triangular program | C language

Q : Write a ‘C’ Program to find Sum of lower triangular elements in a matrix.


Answer : 


Lower triangular


Lower triangular matrix is a special square matrix whole all elements above the main diagonal is zero.



Delete a number by given position from array program | C Language

Q : Write a program to delete an element from a given location of an array of integers.

Answer : 


#include<stdio.h>
#include<conio.h>
#define MAX 50
/*============================
     Girfa Student Help
     Remove from array by given index
==============================*/

Link List vs Array

Q :Define array and link list. Give one example for each showing its usage


Answer :


Define Link List

struct node
{
     int data;
     struct node *next;
}
int ar[5];

Saturday 27 June 2020

Whatsapp button for website


Add whatsup button at bottom right side of your website. Button will show when user scroll down because it can disturb your home page opening view. When user will click on whatsapp button it will redirect to whatsapp message mode to the given number.

<style>
    /* ========= CSS ==========*/
    .g-whatsapp {
        display: none;
        position: fixed;
        bottom: 20px;
        right: 30px;
        z-index: 99;
        cursor: pointer;
    }
</style>

Friday 26 June 2020

Even number print using function

Q : Write a function in ‘C’ to print even numbers from 1 to 100.

Answer : 



#include<stdio.h>
#include<conio.h>
/*============================
     Girfa Student Help
     print even no. 1-100 using function
==============================*/
void print();
void main()
{

Paragraph input using scanf

Q : Write a ‘C’ program in which a scanf() function can read a complete paragraph of text.

Answer : 



#include<stdio.h>
#include<conio.h>
/*============================
      Girfa Student Help
      Paragraph input using scanf
==============================*/
void main()
{
    

Tuesday 23 June 2020

ABC Pattern

Q : Write a program to print the following pattern?



#include<stdio.h>
#include<conio.h>
/*=========================
      Girfa Student Help
      Pattern program
  ==========================*/

Bootstrap Corousel


<html>
<head>
<title>Corousel</title>
<script src="jquery.min.js"></script>
<script src="transition.js"></script>
<script src="carousel.js"></script>
<link href="bootstrap.min.css" rel="stylesheet">

</head>

Monday 22 June 2020

String Handling C Language


String

In C programming, a string is a sequence of one or more than any characters terminated with a null character. In C language you can only save string in one dimensional character array , no separate data type for string like java or c#.
Declare a string
     char str = "GIRFA";
G
I
R
F
A
\0

Compiler will create an array of 6 element one extra cell for null character which is used to detect end of string.

Input/Output


char str[10];
     printf("Enter string>>");
     scanf("%s", str);

     for (i = 1; i<str[i] != '\0'; i++)
          printf("%c", str[i]);
This example shows you input a string without space and process each character.
     char str[10];
     printf("Enter string>>");
     gets(str);
     puts(str);
This example shows how to input space and print using library function.
C language compiler has reach variety of string handling functions string.h library file. Some popular function examples are given below.

1 strcpy

Copy a string into other
Declaration:
   char *strcpy(char *dest, const char *src);
   char far * _fstrcpy(char far *dest, const char far *src);

 Remarks:
Copies string src to dest, stopping after the terminating null character has
been moved.
int main(void)
 {
    char string[10];
    char *str1 = "abcdefghi";

    strcpy(string, str1);
    printf("%s\n", string);
    return 0;
 }

2. Strlen

Calculates length of a string

 Declaration:
   size_t strlen(const char *s);
   size_t far _fstrlen(const char far *s);

 Remarks:
strlen calculates the length of s.

 Return Value:
Returns the number of characters in s, not counting the terminating null
character.
int main(void)
{
   char *string = "Borland International";

   printf("%d\n", strlen(string));
   return 0;
}

3. strcat

Appends one string to another

 Declaration:
   char *strcat(char *dest, const char *src);
   char far * far _fstrcat(char far *dest, const char far *src);

 Remarks:
strcat appends a copy of src to the end of dest. The length of the resulting
string is strlen(dest) + strlen(src).


int main(void)
{
   char destination[25];
   char *blank = " ", *c = "C++", *turbo = "Turbo";

   strcpy(destination, turbo);
   strcat(destination, blank);
   strcat(destination, c);

   printf("%s\n", destination);
   return 0;
}

4.strcmp

strcmp compare two strings

 Declaration:
   int strcmp(const char *s1, const char*s2);


 Remarks:
 strcmp performs an unsigned comparison of s1 to s2. _fstrcmp is the far
version.

Return Value:
These routines return an int value that is
   <  0  if s1 <  s2
   == 0  if s1 == s2
   >  0  if s1 >  s2



int main(void)
 {
    char *buf1 = "aaa", *buf2 = "bbb", *buf3 = "ccc";
    int ptr;

    ptr = strcmp(buf2, buf1);
    if (ptr > 0)
       printf("buffer 2 is greater than buffer 1\n");
    else
       printf("buffer 2 is less than buffer 1\n");

    ptr = strcmp(buf2, buf3);
    if (ptr > 0)
       printf("buffer 2 is greater than buffer 3\n");
    else
       printf("buffer 2 is less than buffer 3\n");

    return 0;
 }


5. strrev


 Reverses all characters in s (except for the terminating null)

 Declaration:
   char *strrev(char *s);
   char far * far _fstrrev(char far *s);

 Remarks:
strrev and _fstrrev changes all characters in a string to reverse order,
except the terminating null character.

For example, it would change
  string\0
to
  gnirts\0.)

 Return Value:
strrev returns a pointer to the reversed string.




int main(void)
{
   char *string = "Borland International";

   printf("string prior to strlwr: %s\n", string);
   strlwr(string);
   printf("string after strlwr:    %s\n", string);
   return 0;
}




Sunday 21 June 2020

File C Language


File

A computer file is a computer resource for recording data discretely in a computer storage device. Just as words can be written to paper, so can information be written to a computer file. Files can be edited and transferred through the internet on that particular computer system.

Saturday 20 June 2020

Sum of digit program C language

Q : Write a program to find the sum of the digits of a number.

Answer :


#include<stdio.h>
#include<conio.h>
/*##########################
     Girfa Student Help
     Sum of digits of a number
  ##########################*/
void main()
{
   

Difference between = and == operator C Language

Difference between = and == operator C Language

Assignment Operator

= is an assignment operator which transfer right  hand variable value to left hand side variable with over right mode.


int i=1,j=2;

Friday 19 June 2020

Prime number program 1 to 100

Q : Write a program to print all prime numbers from 1 to 100. Use nested loops, break or continue statement wherever necessary.

Answer : 



#include<stdio.h>
#include<conio.h>
/*##########################
     Girfa Student Help
     Prime number 1 to 100
  ##########################*/

Goto C Language

Goto Example C Language

Goto is a statement which is used to transfer execution control to a label. Goto is an old approach of programming which unstructured a program structure. So programmer ignor goto in modern programming.
In some old programming language like Assembly, goto is used to implement iteration.

Syntax :

goto syntax

Wednesday 17 June 2020

Continue in C language


What are the uses of Continue 


Continue statement is transfers execution control at the top of the loop where the condition checks. All statements after continue skips. The closing bracket of the loop does the same task. Continue statements should always be inside of a condition i.e. if, otherwise you may face infinite loop. Continue statement in C language I feel that the least useful feature.

Example : 

#include<stdio.h>

#include<conio.h>
/*##########################
     Girfa Student Help
     Example of continue
  ##########################*/