Normally, the two-dimensional array can be viewed as a matrix. The conceptual view of a 2-D array is shown below:
int A[4][3];

In the above example, the 2-D array name A has 4 rows and 3 columns.
Like one-dimensional, the 2-D array elements are stored in continuous memory.
There are two types of 2-D array memory representations. They are:
1. Row-Major order
2. Column-Major order
For example
int A[4)[3]={
{ 8,6,5},
{ 2,1,9},
{3,6,4},
{4,3,2},

C++ Program to find transpose of a matrix
#include< iostream >
using namespace std;
int main( )
{
int a[10][10], trans[10][10], r, c, i,j;
cout < < "Enter rows and columns of matrix:";
cin > > r > > c;
cout < < endl < < "Enter elements of matrix:" < < endl;
for (i = 0; i < r; ++i)
for (j = 0; j < c; ++j)
{
cout < < "Enter elements a" < < i + 1 < < j + 1 < < ":";
cin > > a[i][j];
}
cout« endl « "Entered matrix:"< < endl;
for (i = 0; i < r; ++i) .
for (j = 0;j < c; ++j)
}
cout-c " " < < a[i][j];
if (j = = c - 1)
cout < < endl < < endl;
}
for (i = 0; i < r; ++i)
for (j = 0;j < c; ++j)
{
trans[j][i] = a[i][j];
}
cout < < endl < < "Transpose of matrix:" < < endl;
for (i = 0; i < c; ++i)
for (j = 0; j < r; ++j)
{
cout-: " "< < trans[i][j];
if (j = = r-1)
cout < < endl < < endl;
}
return 0;
}
Output:
Enter rows and columns of matrix:
  2                        3
Enter elements of matrix
Enter elements of a11 = 1
Enter elements of a12 = 2
Enter elements of a13 = 9
Enter elements of a21 = 0
Enter elements of a22 = 4
Enter elements of a23 = 7
Entered matrix:
1 2 9
0 4 7
Transpose of matrix:
1 0
2 4
9 7

Struct Employee { char name[50]; int age; float salary};
#include < iostream >
using namespace std;
struct Employee
{
char name[50];
int age;
float salary;
};
int maim)
{
Employee e1;
cout' << "Enter Full name: ";
cin >> e1.name;
cout << ccend1 << x'Bnter age: ";
cin >> e1.age;
cout << ccend1' << "Enter salary: ";
cin >> e1.salary;
cout <<  "\nDisplaying Information." .
<< end1;
,cout << "Name: n << e1.name << end1;
cout << "Age: " << e1.age << end1:
cout <<  "Salary: " << e1.salary;
return 0;
}
Output:
Enter Full name: Ezhil
Enter age: 27
Enter salary: 40000.00
Displaying Iriformation.
Name: Ezhil
Age: 27
Salary: 40000.00

#include < iostream >
using namespace std;
int main()
{
int i, j len, flag = 1;
char a [20];
cout << "Enter a string:";
cin >> a;
for(len=O;a[len] !='\O';++len)
for(!=OJ=len -I ;i < len/2;++i,--j)
{
if(a[j]!=a[i])
flag=O;
}
iflflag 1)
cout << "\n The String is palmdrome";
else
cout << "\n The String is not palindrome";
return 0;
}
Output:
Enter a string: madam
The String is a palindrome.

#include < iostream >
using namespace std;
int main()
{
int num[10], even=0, odd=0;
for(int i=0; i < 10; i++)
{
cout << "\nEnter Mark' < xi+ I << "=";
cin >> marks[i];
if (num[i] % 2 =0
++even;
else
++odd;
}
cout << "\n There are" << even << "Even Numbers";
cout << "\n There are" << odd << "Odd Numbers";
}