This COBOL program, named Matrix, checks whether a given matrix is a "magic matrix" or not. A magic matrix is a square matrix where the sum of each row, each column, and both main diagonals is equal.

To use this program, ensure you have a COBOL environment set up. You can compile and execute the program using your preferred COBOL compiler.

1- Execute the program following the compilation and execution instructions of your COBOL environment. 2- Enter the values of the matrix when prompted by the program. Make sure to input integers for each matrix element. 3- The program will verify if the matrix is magic or not and display the corresponding result.

1- The program prompts the user to input the values of each matrix element. 2- It then checks if each input is a valid integer. If an input is not valid, the program displays a warning message and prompts for re-entry. 3- Once all matrix values are entered and validated, the program calculates the sum of each row, column, and both main diagonals. 4- Finally, it checks if all sums are equal. If they are, the program displays a message confirming that the matrix is magic. Otherwise, it displays a message indicating that the matrix is not magic.

*** Matrice magique ***

• C'est pas une matrice magique -

Fin de traitement.

Process finished with exit code 0