programming fundamental

1. Presented by:
Zarafshan 018
Kinza 020
Yousra 014

2.  A type of function that is available as apart of
language is known as built-in function/library
function.
 These functions are ready made programs.
 Built-in function make programming faster
and easier.
 Different built-in function are defined in
different header files.

3.  The fmod function is used to find remainder
by dividing two floating point values.
Syntax
fmod(x , y)

4.  #include<iostream>
 #include<math.h>
 int main()
 {
 double a,b,r;
 cout<<"enter first double value ";
 cin>>a;
 cout<<"enter 2nd double value ";
 cin>>b;
 r=fmod(a,b);
 cout<<"the result of fmod()="<<r;
 }

5.  The gotoxy() is used to move the cursor to a
specified location on the screen.
 It moves the cursor with respect to x-axis
 And y-axis.
 It is very useful when the output is to be
displayed at a specific location on the screen.
 Syntax
 gotoxy(x , y)

6.  #include<iostream>
 #include<conio.h>
 int main()
 {
 gotoxy(0,0);
 cout<<"pakistan zindabad";
 gotoxy(1,50);
 cout<<"pakistan zindabad";
 getch();
 }

7.  The word ‘putchar’ stands for put character.
 The function is used to display single
character on the screen.
Syntax
Putchar(ch);
The parameter ch is the variable or constant whose
value is to be displayed on screen.

8.  #include<iostream>
 #include<stdio.h>
 int main()
 {
 char ch;
 cout<<"enter a character ";
 cin>>ch;
 putchar(ch)
 putchar('*');
 }

9.  Strlen stand for string length.
 This function is used to find the length of a
string.Its counts the total number of charater
including spaces.
 Null character is excluded.
 “String.h”header file contains the function
that are used to process strings.
 Syntax:
 int strlen(string);

10.  #include<iostream.h>
 #include<string.h>
 Int main()
 {
 Char str[100];
 Puts(“enter any string?”);
 Gets(str);
 Cout<<“length of string is=“<<strlen(str);
 }