Matrix Multiplication 1

[kalaiarasi]

Hi all,

Is there any predefined function in VC to do matrix multiplication?

I have 2 2-D arrays and i would like to perform matrix multiplication between these 2 arrays.

Any easier way?

Help.

Kalai

 

[Sridharan]

kalaiarasi,

i can't think of any predefined functions in vc++....

bu it can be done easily.... suppose u have two 2d arrays like this

int mat1[10][10],mat2[10][10]...

the following code will multiply mat1 and mat2 and store the result in result[10][10]

for(i=0;i<row1;i++)
{
for(j=0;j<col2;j++)
{
result[j]=0;
for(ip=0;ip<col1;ip++)
{
result[j]=result[j]+mat1[ip]*mat2[ip][j];
}
}
}

where row1,col1 is no of rows & colums in mat1 and col2 is no of columns in mat2...

but make sure that column of mat1 is equal to the row of mat2.... if that is not the case u can't multiply the given two matrices...

regards

sridharan

 

[kalaiarasi]

Thanks sridharan!