You will implement a multithreaded version of your work in phase $1$ using POSIX Threads.

You will compute each number in the output matrix with a separate thread.

You will display the contents of the output matrix whenever a thread sets a value in the

output matrix.

Initially, all the values in the output matrix will be equal to $-1.$

this is my phase $1$ code :

#include

#define M$1\_$ROWS $7$

#define M$1\_$COLS $7$

#define M$2\_$ROWS $4$

#define M$2\_$COLS $4$

$//$ Function to multiply matrices based on the given criteria

void multiplyMatrices$($int m$1[$M$1\_$ROWS$][$M$1\_$COLS$],$ int m$2[$M$2\_$ROWS$][$M$2\_$COLS$],$ int result$[$M$1\_$ROWS$][$M$1\_$COLS$])\{$

int i$,$ j$,$ k$,$ l;

for $($i $=0$; i $$ M$1\_$ROWS; $++$i$)\{$

for $($j $=0$; j $$ M$1\_$COLS; $++$j$)\{$

result$[$i$][$j$]=0$; $//$ Initializing result matrix element to $0$

for $($k $=0$; k $$ M$2\_$ROWS; $++$k$)\{$

for $($l $=0$; l $$ M$2\_$COLS; $++$l$)\{$

$//$ Multiplying corresponding elements and summing the result

if $($i $+$ k $$ M$1\_$ROWS && j $+$ l $$ M$1\_$COLS$)\{$

result$[$i$][$j$]+=$ m$1[$i $+$ k$][$j $+$ l$]*$ m$2[$k$][$l$]$;

$\}$

$\}$

$\}$

$\}$

$\}$

$\}$

$//$ Function to display the matrix

void displayMatrix$($int matrix$[$M$1\_$ROWS$][$M$1\_$COLS$])\{$

int i$,$ j;

for $($i $=0$; i $$ M$1\_$ROWS; $++$i$)\{$

for $($j $=0$; j $$ M$1\_$COLS; $++$j$)\{$

printf$("\%$d$\backslash$t$",$ matrix$[$i$][$j$])$;

$\}$

printf$("$

$")$;

$\}$

$\}$

int main$()\{$

int m$1[$M$1\_$ROWS$][$M$1\_$COLS$]=\{$

$\{17,11,17,1,14,17,16\},$

$\{19,20,3,17,4,14,16\},$

$\{3,20,9,19,15,7,4\},$

$\{19,4,19,14,1,20,10\},$

$\{13,20,16,16,6,1,9\},$

$\{2,20,20,15,1,9,13\},$

$\{6,10,14,8,2,8,15\}$

$\}$;

int m$2[$M$2\_$ROWS$][$M$2\_$COLS$]=\{$

$\{1,0,0,0\},$

$\{0,1,0,0\},$

$\{0,0,1,0\},$

$\{0,0,0,1\}$

$\}$;

int result$[$M$1\_$ROWS$][$M$1\_$COLS$]$;

multiplyMatrices$($m$1,$ m$2,$ result$)$;

$//$ Displaying the result matrix

displayMatrix$($result$)$;

return $0$;

$\}$