C++
Given string strVar on one line, integer idxStart on a second line, and integer choiceLen on a third line, replace choiceLen characters with "1234", starting at index idxStart.
Ex: If the input is:
Fuzzy bear
3
4
then the output is:
Fuz1234ear
Note: Using a pre-defined string function, the solution can be just one line of code.
