#include<iostream>
using namespace std;
int main()
{
int a[5][5],big1=1,big2=0,n,m,i,j;
cout<<"Enter no of rows and columns(max 5):";
cin>>m>>n;
cout<<"Enter the array:\n";
for(i=0;i<m;i++)
for(j=0;j<n;++j)
cin>>a[i][j];
for(i=0;i<m;++i)
for(j=0;j<n;++j)
{
if(a[i][j]>big1)
big1=a[i][j];
}
for(i=0;i<m;++i)
for(j=0;j<n;++j)
{
if(a[i][j]>big2&&a[i][j]<big1)
big2=a[i][j];
}
cout<<"\nLargest number:"<<big1;
cout<<"\nSecond largest number:"<<big2;
return 0;
}
Output
Enter no of rows and columns(max 5):3
3
Enter the array:
4 6 8
2 4 6
2 12 5
Largest number:12
Second largest number:8