C Program To Find Largest And Smallest Number In An Array

C Program To Find Largest And Smallest Number In An Array Using Pointer

Program -:

//C Program To Find Largest and Smallest Number In An Array Using Pointer

#include<stdio.h>
void  main()
{
    int i,*ptr, n,a[100],larg,small;

    printf("Enter How many number you want?:\n") ;
    scanf("%d",&n) ;

    printf("Enter %d numbers\n",n) ;
    for(i=0;i<n;i++)
    {
        scanf("%d",&a[i]) ;
    }
    ptr = &a[0];
    larg= *ptr;
    for(i=0;i<n;i++,*ptr++)
    {
        if(*ptr>larg)
        {
            larg=*ptr;
        }
    }
    ptr = &a[0];
    small= *ptr;
    for(i=0;i<n;i++,*ptr++)
    {
        if(*ptr<small)
        {
            small=*ptr;
        }
    }
    printf("%d is Largest Number\n",larg);
    printf("%d is Smallest Number",small);
}

Output -:

Enter How many number you want?:
5
Enter 5 numbers
19
28
38
28
27

38 is Largest Number
19 is Smallest Number

C Program To Find Largest And Smallest Number In An Array Using Recusion

Program -:

//C Program To Find Largest and Smallest Number In An Array Using Recursion

#include<stdio.h>
int Largest(int a[],int n);
int smallest(int a[],int n);
void main()
{
    int i,j,n,a[20];
    printf("Enter a Number :");
    scanf("%d",&n);
    printf("Enter Values : ");

    for(i=0;i<n;i++)
    {
        scanf("%d",&a[i]);
    }

    printf("\%d is Largest Number\n",Largest(a,n));
    printf("\%d is Smallest Number\n",smallest(a,n));

}
int Largest(int a[],int n)
{
    int max;

    if(n==1)
        return a[0];

    else {
        max=Largest(a,n-1);

        if(max>a[n-1])
            return max;
        else

            return a[n-1];
    }
}
int smallest(int a[],int n)
{
    int min;

    if(n==1)
        return a[0];

    else {
        min=smallest(a,n-1);

        if(min<a[n-1])
            return min;
        else

            return a[n-1];
    }

}

Output -:

Enter a number : 5
Enter values
1
8
3
2
7

8 is Largest Number
1 is Smallest Number

C Program To Find 2nd Largest And Smallest Number In An Array

Program -:

//C Program To Find the 2nd Largest and smallest Number In An Array

#include<stdio.h>
void  main()
{
    int i,n,array[100],Largest, secLargest, smallest, secsmallest;

    printf("Enter How many number you want?:\n") ;
    scanf("%d",&n) ;

    printf("Enter %d Values \n",n) ;
    for(i=0;i<n;i++)
    {
        scanf("%d",&array[i]) ;
    }
   if (array[0] > array[1]) {
        Largest = array[0];
        secLargest = array[1];
    }
    else {
      Largest = array[1];
      secLargest = array[0];
    }
    for (i = 2; i < n; i++) {
        if (array[i] > Largest) {
        secLargest = Largest;
        Largest = array[i];
        }
        else if (array[i] > secLargest) {
            secLargest = array[i];
        }
    }
    if (array[0] < array[1]) {
        smallest = array[0];
        secsmallest = array[1];
    }
    else {
      smallest = array[1];
      secsmallest = array[0];
    }
    for (i = 2; i < n; i++) {
        if (array[i] < smallest) {
        secsmallest = smallest;
        smallest = array[i];
        }
        else if (array[i] < secsmallest) {
            secsmallest = array[i];
        }
    }
    printf(" \nSecond Largest Element is %d", secLargest);
    printf(" \nSecond Smallest Element is %d", secsmallest);
}

Output -:

Enter How many number you want?:
5
Enter 5 numbers
109
208
308
208
207

Second Largest Number is 208
Second Smallest Number is 207