1. Write a recursive C++ function writeLine(ch,n) that writes a character repeatedly to form a line of n characters. For example, writeLine('%', 5) produces the line % % % % %.

2. Now write another recursive function writeBlock (ch,n,m) that uses writeLine(ch, n) to write m lines of n characters each. For example, writeBlock('*', 5, 3) produces the output % % % % %. % % % % %. % % % % %.

3. provide a main() function for testing.