What is my teacher asking for? Matrices...

[td0g03]

This program adds two square matrices - Algorithm 1-3, Page 35.
Change it to implement the generalized algorithm to add two m x n
matrices.


Matrices, in general, are not square or n x n (n-by-n). The number of
rows may not be the same as the number of columns. Here is an example of
3 x 4 matrix.

2 3 1 0
1 4 2 -1
0 -2 2 3

You are asked to change that function so that it can add any two general
matrices, of the same dimensions.

[r035198x]

This program adds two square matrices - Algorithm 1-3, Page 35.
Change it to implement the generalized algorithm to add two m x n
matrices.


Matrices, in general, are not square or n x n (n-by-n). The number of
rows may not be the same as the number of columns. Here is an example of
3 x 4 matrix.

2 3 1 0
1 4 2 -1
0 -2 2 3

You are asked to change that function so that it can add any two general
matrices, of the same dimensions.

Did you read the page that was provided?

[td0g03]

Did you read the page that was provided?

Yeah, let me post it.

 
#include <stdio.h>
#include <stdlib.h>
 
#define SIZE 10
 
void addMatrix( int m1[][SIZE], 
                int m2[][SIZE], 
                int size,     
                int m3[][SIZE] );
 
void printMatrix( int m[][SIZE], int size );
 
int main ( void )
{
    int size = 3;
    int m1[SIZE][SIZE] = 
        {
            {  2,  0,  5 },
            {  3,  1, 10 },
            {  0,  4,  1 }
        };
 
    int m2[SIZE][SIZE] = 
        {
            {  0,  1,  3},
            {  2,  0,  1},
            {  6,  1,  8}
        };
 
    int m3[SIZE][SIZE];
 
    addMatrix( m1, m2, size, m3 );
 
    printf( "\nAdd two matrices:\n" );
    printf( "\nMatrix 1: \n" );
    printMatrix( m1, size );
    printf( "\nMatrix 2: \n" );
    printMatrix( m2, size );
    printf( "\nTheir sum: \n" );
    printMatrix( m3, size );
 
    return 0;
}
 
/* ================== addMatrix  ================== 
      Add m1 and m2, and place results in m3 
      Pre:    m1 and m2 have data; 
              size - the number of columns and rows
      Post:   matrices added, result in m3
      Return: nothing
*/
void addMatrix( int m1[][SIZE], 
                int m2[][SIZE], 
                int size,     
                int m3[][SIZE] )
{
    int r;
    int c;
 
    for( r = 0; r < size; r++ )
        for( c = 0; c < size; c++ )
            m3[r][c] = m1[r][c] + m2[r][c];
 
    return;
} /* addMatrix */
 
/* ================== printMatrix  ================ 
      Print matrix
      Pre:    m has data; 
              size - the number of columns and rows
      Post:   matrix m printed
      Return: nothing
*/
void printMatrix( int m[][SIZE], int size )
{
    int r;
    int c;
 
    for( r = 0; r < size; r++ )
    {
        for( c = 0; c < size; c++ )
            printf( "%5d ", m[r][c] );
        printf( "\n" );
    }
    printf( "\n" );
 
    return;
} /* printMatrix */
 

[td0g03]

Did you read the page that was provided?

Opps, i don't have the book, but it just shows a picture from what I remember. Of two matrices being added and having a sum. Like my program above.

[emaghero]

This program adds two square matrices - Algorithm 1-3, Page 35.
Change it to implement the generalized algorithm to add two m x n
matrices.


Matrices, in general, are not square or n x n (n-by-n). The number of
rows may not be the same as the number of columns. Here is an example of
3 x 4 matrix.

2 3 1 0
1 4 2 -1
0 -2 2 3

You are asked to change that function so that it can add any two general
matrices, of the same dimensions.

What exactly is your problem? Are you confused about Matrices, Matrix Addition, Implementing Matrix operations in code?

If you want to know about Matrices google them and you will find all the info you need.

If you have a coding issue ask a specific question. You will get a reply.

[tnga]

maybe start here

Matrices