Searching Arrays with Linear Search - C++ Data Type

C++ examples for Data Type:Array

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Description

Searching Arrays with Linear Search

Demo Code

#include <iostream> 
using namespace std; 

int linearSearch( const int [], int, int ); // prototype 

int main() /*from ww w.  j  a  v  a 2  s .  c o m*/
{ 
    const int arraySize = 100; // size of array a 
    int a[ arraySize ]; // create array a 
    int searchKey; // value to locate in array a 

    for ( int i = 0; i < arraySize; ++i ) 
        a[ i ] = 2 * i; // create some data 

    cout << "Enter integer search key: "; 
    cin >> searchKey; 

    // attempt to locate searchKey in array a 
    int element = linearSearch( a, searchKey, arraySize ); 

    // display results 
    if ( element != -1 ) 
        cout << "Found value in element " << element << endl; 
    else 
        cout << "Value not found" << endl; 
}

int linearSearch( const int array[], int key, int sizeOfArray ) 
{ 
    for ( int j = 0; j < sizeOfArray ; ++j ) 
        if ( array[ j ] == key ) // if found, 
            return j; // return location of key 

    return -1; // key not found 
}

Result


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