in C++

Write a simple run-length encoder: you will read a sequence of pairs containing a character and a number. For each pair (C,N), output the character N times without spaces. When a pair has number -1 print a newline, if the number is -2 then stop the program.

For example,

input:

Enter a character to count: h

Number of times to print char: 3

Output:

hhh