Program to print the sum of boundary elements of a matrix is discussed here. Given a matrix, the task is to print the boundary elements of the matrix and display their sum.

For example, consider the matrix given below.

1 2 3

4 5 6

7 8 9

Boundary Matrix

1 2 3n4   6n7 8 9n

Sum of boundary elements: 1 + 2 + 3 + 4 + 6 + 7 + 8 + 9 = 40

Algorithm to print the sum of boundary elements of a matrix

• Input the order of the matrix.
• Input the matrix elements.
• Print all the boundary elements of the matrix.
• Find the sum of the boundary elements.
• Print sum.

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Program to print the sum of boundary elements of a matrix

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