Part II [64 points] - Logie problem solving and coding 1. [13 points] Write a complete and efficient C++ program that inputs a string from the keyboard and stores the string in a C-Strings variable called str1. The program copies nly numeric characters from string strl to another C-String variable called str2. After completing the copy, the program displays string str2. You can use any character functions. Any cstring header file are not allowed string functions such as strcat, strlen, strepy, strncpy, strncat from the