Program in C and C++ to find the second largest element in an array of n elements

Program in C and C++ to find the second largest element in an array of n elements

Second method

C

CPP

#include<stdio.h>
#define size 25
 int Second_Max(int a[],int *n)
   {
      int i,first,second;
      first=a[0];
      second=a[1];
      if(a[0]>a[1])
        {
          first=a[0];
          second=a[1];
        }
      else
        {
          first=a[1];
          second=a[0];
        }
      for(i=2;i<*n;i++)
        {
          if(a[i]>first)
          {
              second=first;
              first=a[i];
          }
          else if(a[i]>second)
          {
              second=a[i];
          }
        }
      return second;
   }
   int main(void)
    {
   int a[size],i,n,sl;
   printf("Enter the size of array:-");
   scanf("%d",&n);
   if(n>size)
     {
       printf("Invalid array size.");
       return 0;
     }
   printf("Enter %d numbers:-",n);
   for(i=0;i<n;i++)
     scanf("%d",&a[i]);
     sl=Second_Max(a,&n);
   printf("Second largest element = %d",sl);
   return 0;
 }

#include<iostream>
 using namespace std;
 int Second_Max(int a[],int &n)
   {
      int i,first,second;
      first=a[0];
      second=a[1];
      if(a[0]>a[1])
        {
          first=a[0];
          second=a[1];
        }
      else
        {
          first=a[1];
          second=a[0];
        }
      for(i=2;i<n;i++)
        {
          if(a[i]>first)
          {
              second=first;
              first=a[i];
          }
          else if(a[i]>second)
          {
              second=a[i];
          }
        }
      return second;
   }
   int main(void)
    {
      const int size=25;
      int a[size],i,n;
      cout<<"Enter the size of array:-";
      cin>>n;
      if(n>size)
       {
        cout<<"Invalid array size.";
        return 0;
    }
   cout<<"Enter "<<n<<" numbers:-";
   for(i=0;i<n;i++)
     cin>>a[i];
   int sl=Second_Max(a,n);
   cout<<"Second largest element = "<<sl;
   return 0;
 }  

Output:-

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