Transpose a Matrix File

The first line of the file holds two integers R C: the number of rows and the number of columns. The next R lines each hold C integers separated by single spaces:

2 3
1 2 3
4 5 6

Write a function void printTransposed(const string& filename) that prints the transpose: C lines, each containing R integers separated by single spaces with no trailing space, each line ending with a newline. Output line j lists column j of the input from top to bottom. For the file above print exactly the output shown in Expected Output.

Do NOT write a main function.