Selection Sort in C++

 Machine Problem in C++

Write a program to ask the user to give a series of numbers and then the program will sort the given numbers using selection sort algorithms.

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   Program Listing 

/* selection_sort.cpp

       

    Machine Problem in C++

    

Write a program to ask the user to give a series of

numbers and then the program will sort the given 

numbers using selection sort algorithms.

    

    Jake R. Pomperada, MAED-IT, MIT

    www.jakerpomperada.com

    www.jakerpomperada.blogspot.com

    jakerpomperada@gmail.com

    Bacolod City, Negros Occidental, Philippines

*/ 

#include <iostream>

void selection_sort();

int i=0,a[100], num=0;

int main()

{

    

    std::cout <<"\n\n";

    std::cout <<"\tSelection Sort in C++";

    std::cout <<"\n\n";

    std::cout <<"\tHow many items in the array? : ";

    std::cin >> num;

std::cout <<"\n\n";

    

      for(i=0; i<num; i++) {

         std::cout <<"\tGive value in item no." << i+1 << " : ";

         std::cin >> a[i];

        }

    std::cout <<"\n\tBefore sorting:\n";

    std::cout <<"\n";

std::cout <<"\t";

    for(i=0; i<num; i++)

        std::cout << " " << a[i] << " ";

    selection_sort();

    std::cout <<"\n";

    std::cout <<"\n\tAfter sorting:\n";

    std::cout <<"\n";

std::cout <<"\t";

    for(i=0; i<num; i++)

        std::cout << " " << a[i] << " ";

    std::cout <<"\n\n";

    std::cout <<"\tEnd of Program";

}

void selection_sort()

{

    int i, j, min, temp;

    for (i=0; i<num; i++)

    {

        min = i;

        for (j=i+1; j<num; j++)

        {

            if (a[j] < a[min])

                min = j;

        }

        temp = a[i];

        a[i] = a[min];

        a[min] = temp;

    }

}