move proc to seperate file

src/main.nim

@@ -1,28 +1,24 @@
-import strutils, sequtils #, strformat
+import strutils, sequtils, procedures  #, strformat
 
-proc print_matrix(matrix: seq[seq[float]], row: int) =
-    for i in countup(1, row):
-        echo matrix[i-1]
+# TODO: check if command was either dot or cross product 
 
-proc fill_matrix(matrix: var seq[seq[float]], row, col: int) =
-    for i in countup(1, row):
-        for j in countup(1, col):
-            echo "Enter item in row:"
-            var entry: float = parseFloat(readLine(stdin))
-            matrix[i-1].add(entry)
-            matrix[i-1].delete(0)
-        echo matrix[i-1]
+echo "Enter number of rows in the first matrix:"
+let r1: int = parseInt(readLine(stdin))
+echo "Enter number of columns in the first matrix:"
+let c1: int = parseInt(readLine(stdin))
+var m1 = newSeqWith(r1, newSeq[float](c1))
 
-echo "Enter number of rows:"
-let row: int = parseInt(readLine(stdin))
+procedures.fillMatrix(m1, r1, c1)
 
-echo "Enter number of columns:"
-let col: int = parseInt(readLine(stdin))
+echo "Enter number of rows in the second matrix:"
+let r2: int = parseInt(readLine(stdin))
+echo "Enter number of columns in the second matrix:"
+let c2: int = parseInt(readLine(stdin))
+var m2 = newSeqWith(r2, newSeq[float](c2))
 
-var matrix = newSeqWith(row, newSeq[float](col))
+procedures.fillMatrix(m2, r2, c2)
 
-
-fill_matrix(matrix, row, col)
-
-echo "\nMatrix entered is:"
-print_matrix(matrix, row)
+echo "\nFirst matrix is:"
+procedures.printMatrix(m1, r1)
+echo "\nSecond matrix is:"
+procedures.printMatrix(m2, r2)  

src/procedures.nim

@@ -0,0 +1,16 @@
+import strutils
+
+## prints a matrix to the standard output
+proc printMatrix*(matrix: seq[seq[float]], row: int) =
+    for i in countup(1, row):
+        echo matrix[i-1]
+
+## get elements of matrix from standard input
+proc fillMatrix*(matrix: var seq[seq[float]], row, col: int) =
+    for i in countup(1, row):
+        for j in countup(1, col):
+            echo "Enter item in row:"
+            var entry: float = parseFloat(readLine(stdin))
+            matrix[i-1].add(entry)
+            matrix[i-1].delete(0)
+        echo matrix[i-1]