I want to know how to develop a matrix calculator that preforms basic matrix operations usin g arrays and/or pointers. Iwant a calculator to do addition ,subtraction ,multiplication ,transpose,checking enquality, checking properties and matrix power & the program will read the data from a file & check if the data is integer or character 7 the file name must have the dimension(.mat) .i did that part i added the dimension(.mat) to the file name but the file don't open so please anyone who can help me in how to do that or give me the code or parts of it today or tomorrow. i'll be graetfull & thanks in advance .