From f94ec127f945bc3edc4aae2b67e5fb4e53c7ecf0 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Thu, 7 May 2026 19:24:29 +0200
Subject: [PATCH] add function

---
 matrix.c | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/matrix.c b/matrix.c
index 4047e00..34ac577 100644
--- a/matrix.c
+++ b/matrix.c
@@ -50,7 +50,36 @@ return matrix.buffer [index]; // return the value at that index
 }
 
 Matrix add(const Matrix matrix1, const Matrix matrix2)
-{
+{ if (matrix1.rows != matrix2.rows){ // check row compatibility
+    Matrix empty = {.rows =0, .cols=0, .buffer = NULL};
+    return empty;
+}
+  if (matrix1.cols!= matrix2.cols && matrix2.cols !=1 && matrix1.cols != 1){ // check column compatibility (allow broadcasting ) 
+    Matrix empty = {.rows =0, .cols=0, .buffer =NULL};
+    return empty;
+  }
+    unsigned int resultRows = matrix1.rows; //determine result dimensions
+    unsigned int resultCols = (matrix1.cols > matrix2.cols) ? matrix1.cols: matrix2.cols;
+     //Allocate memory for the result buffer 
+  MatrixType *resultBuffer = malloc(resultRows * resultCols * sizeof(MatrixType)); 
+  if (resultBuffer == NULL){
+    Matrix empty = {.rows =0, .cols=0, .buffer=NULL};
+    return empty;
+  } 
+  // add elements element-wise with broadcasting 
+  for (unsigned int row =0; row < resultRows; ++row){
+    for (unsigned int col =0; col < resultCols; ++col){
+        MatrixType val1 = getMatrixAt(matrix1, row, col);
+        //Handle broadcasting: if matrix2 has 1 column, use column 0
+        unsigned int col2 = (matrix2.cols==1) ? 0 : col;
+        MatrixType val2 = getMatrixAt(matrix2, row, col2);
+
+        unsigned int resultIndex = row * resultCols + col;
+        resultBuffer[resultIndex] = val1 +val2;
+    }
+  } 
+  Matrix result = {.rows = resultRows, .cols = resultCols, .buffer= resultBuffer};
+  return result; //create and return result
     
 }