gregorygarver.com

[LibsRwimps]

hi, i'm starting out with c++ and have been writing a for-the-hell-of-it piece of code to calculate the product of two matrices. It runs but produced the wrong results. After hours of headaches I narrowed down the problem to the following code: cout<<"enter the elements of matrix A from left to right, top to bottom >";for (a=0; a>mat1[a][b]; }}where y1 and x1 are the height and width of matrix "mat1" respectively. The problem is that the numbers I enter get mixed up and the numbers that get put into the array are different. example: If I declare the array mat1 to be of size x1=2 and y1=2, and input the numbers 1, 2, 3, 4 then when I display the array contents afterwards with cout, it turns out to be 1, 3, 3, 4.If I enter the numbers 1,2,3,4,5,6,7,8,9 into a 3x3 array then it turns out to be 9 4 7 4 7 8 7 8 9any help?

[Fran]

for some reason values diagonal to each other have the same values.the code is correct i thnik are you sure that the entire code is actually correct; it may not be this part that causing the wrong output. it could be the print function as well. please include how you printed the values as well good luck

[CookieMonster]

I used java but and I always name my row and col that nameBut I checked and it works.int [] [] mat1 = new int [3][3];//javafor (int row=0; row < mat1.length; row++) { for (int col=0; col <mat1.length; col++) { cin>>mat1[row][col]; } }The print out was the same for loops for (int row=0; row < 3; row++) { for (int col=0; col <3; col++) System.out.println( mat1[row][col] +"");//cout }