How to get an input matrix from user?

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To create a program for matrix multiplication without using MATLAB's multiplication command, the program must first prompt the user for positive integer dimensions l, m, and n, ensuring that the dimensions allow for valid multiplication. It should then request the user to input the values for the two matrices A and B based on the specified dimensions. After validating the inputs, the program will perform the matrix multiplication M = A * B manually and calculate the resulting matrix M. Finally, the program will display the resultant matrix M without using a semicolon to suppress output. This approach ensures user engagement and proper validation throughout the process.
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how to get an input matrix from user?

WITHOUT using the MATLAB ‘MULTIPLICATION COMMAND’ write down your own program to implement the matrix multiplication M = A*B, where A and B are two constant matrices of dimensions l x m and m x n, respectively. The program should:
 Prompt the user to enter the dimensions l, m and n;
 Check if all the dimensions are positive integers and if this is not the case, ask the user to enter the values again; also to check whether multiplication is possible or not according the entered dimensions
 Prompt the user to enter the values of the two matrices;
 Apply matrix multiplication M = A * B and calculate the product M;
 Display the resultant matrix M [don’t use ‘;’ at end of statement in order to display].

PLZ help i m get stuck...
 
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