C Program To Find Largest Number In An Array

C Program To Find Largest Number In An Array Using Recursion

Program -:

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

#include<stdio.h>
int Largest(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",Largest(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];
    }

}

Output -:

Enter a Number : 5
Enter Values : 10 
20
301
391
213
391 is Largest Number

C Program To Find Largest Number In An Array Using Pointer

Program -:

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

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

    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;
        }
    }
    printf("%d is Largest Number",larg);
}

Output -:

Enter How Many Number You Want?
5
Enter 5 Numbers
10
3281
28321
33212
2434

33212 is Largest Number

C Program To Find 2nd Largest Number In An Array

Program -:

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

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

    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];
        }
    }
    printf(" \nSecond Largest Element is %d", secLargest);
}

Output -:

Enter How Many Number You Want?
5
Enter 5 Numbers
10
321
2821
312
2434

Second Largest Element is 2434