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Released in 1985, C++ is an object-oriented programming language created by Bjarne Stroustrup. C++ maintains almost all aspects of the C language, while simplifying memory management and adding several features - including a new datatype known as a class (you will learn more about these later) - to allow objectoriented programming. C++ maintains the features of C which allowed for low-level memory access but also gives the programmer new tools to simplify memory management

C++ is a powerful general-purpose programming language. It can be used to create small programs or large applications. It can be used to make CGI scripts or consoleonly DOS programs. C++ allows you to create programs to do almost anything you need to do. The creator of C++, Bjarne Stroustrup, has put together a partial list of applications written in C++.

The free subroutine frees a block of memory previously allocated by the malloc subroutine. Undefined results occur if the Pointer parameter is not a valid pointer. If the Pointer parameter is a null value, no action will occur. The realloc subroutine changes the size of the block of memory pointed to by the Pointer parameter to the number of bytes specified by the Size parameter and returns a new pointer to the block. The pointer specified by the Pointer parameter must have been created with the malloc, calloc, or realloc subroutines and not been deallocated with the free or realloc subroutines. Undefined results occur if the Pointer parameter is not a valid pointer.

Function overloading: C++ enables several functions of the same name to be defined, as long as these functions have different sets of parameters (at least as far as their types are concerned). This capability is called function overloading. When an overloaded function is called, the C++ compiler selects the proper function by examining the number, types and order of the arguments in the call. Function overloading is commonly used to create several functions of the same name that perform similar tasks but on different data types. Operator overloading allows existing C++ operators to be redefined so that they work on objects of user-defined classes. Overloaded operators are syntactic sugar for equivalent function calls. They form a pleasant facade that doesn't add anything fundamental to the language (but they can improve understandability and reduce maintenance costs).

Basic example for C++ programming help is as follows :

  #include<iostream>
     using namespace std;
  
     int recursiveLinearSearch(int array[],int key,int size){
     size=size-1;
       if(size <0){
       return -1;
       }
       else if(array[size]==key){
       return 1;
       }
       else{
       return recursiveLinearSearch(array,key,size);
       }
     }

 
     int main() {
  
       cout<<"Enter The Size Of Array:   ";
     int size;
     cin>>size;
     int array[size], key,i;
    
     // Taking Input In Array
     for(int j=0;j<size;j++){
     cout<<"Enter "<<j<<" Element : ";
     cin>>array[j];
     }
     //Your Entered Array Is
     for(int a=0;a<size;a++){
        cout<<"array[ "<<a<<" ]  =  ";
        cout<<array[a]<<endl;
     }
     cout<<"Enter Key To Search  in Array";
     cin>>key;
     int result;
     result=recursiveLinearSearch(array,key,size--);
     if(result==1){
     cout<<"Key Found in Array  ";
     }
     else{
     cout<<"Key NOT Found in Array  ";
     }
        return 0;
     }

 

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