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.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.
	    
    Jake R. Pomperada, MAED-IT, MIT
    www.jakerpomperada.com
    www.jakerpomperada.blogspot.com
    jakerpomperada@gmail.com
    Bacolod City, Negros Occidental, Philippines

*/ 

#include <stdio.h>

void selection_sort();

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

int main()
{
    
    printf("\n\n");
    printf("\tSelection Sort in C");
    printf("\n\n");
    printf("\tHow many items in the array? : ");
    scanf("%d", &num);
    printf("\n\n");
      for(i=0; i<num; i++) {
     	   printf("\tGive value in item no. %d : ",i+1);
		   scanf("%d", &a[i]);
        }
    printf("\n\tBefore sorting:\n");
    printf("\n");
	printf("\t");
    for(i=0; i<num; i++)
        printf(" %d ", a[i]);
    selection_sort();
    printf("\n");
    printf("\n\tAfter sorting:\n");
    printf("\n");
    printf("\t");  
	for(i=0; i<num; i++)
        printf(" %d ", a[i]);
    getch();
}

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;
    }
}

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