I think it's called shadowing, or job shadowing to be more specific.
Both numeric and non-numeric data have different ASCII codes, that will be the first difference. Second, numeric data are stored in float, double, and int variables while non-numeric data are stored in char. However, both can be stored in a String variable if and only if the desired data to be stored will not be used for computuation using mathematical operations such as addition.
To store a non-numeric data in an array, the array must first be declared as a String variable array while a numeric data can be stored in an array once the array which will store the numeric data is declared as an integer, double, or float variable.
Viruses and malware are common and can have drastically negative results on your computer and life.
You can often tell that your computer is infected because it acts weird or slow.
Active antivirus software is a good way to prevent these problems.
