Add createMatrix functionality

matrix.c

@@ -7,12 +7,42 @@
 typedef struct Matrix {
     unsigned int xElement;
     unsigned int yElement;
-    
+    int ** data;
 } Matrix;
 
 Matrix createMatrix(unsigned int rows, unsigned int cols)
 {
+    Matrix m;
+    m.xElement = rows;
+    m.yElement = cols;
+    m.data = NULL;
+
+    if(rows == 0 || cols == 0){
+        m.xElement = m.yElement = 0;
+        return m;
+    }
+
+    m.data = malloc(rows * sizeof *m.data);
     
+    if(!m.data){
+        m.xElement = m.yElement = 0;
+        return m;
+    }
+    for(unsigned int i = 0; i < rows; i++){
+        m.data[i] = malloc(cols * sizeof *m.data[i]);
+      
+      if(!m.data[i]){
+        for(unsigned int j = 0; j < i; j++){
+            free(m.data[j]);
+        }
+        free(m.data);
+        m.data = NULL;
+        m.xElement = m.yElement = 0;
+        return m;
+      }
+        
+    }
+    return m;
 }
 
 void clearMatrix(Matrix *matrix)