The switch statement in the question above is written in C++ programming language. Firstly a variable of type char is declared and assigned a value of a. The switch statement then checks this value and executes the statement that follows, observe that in all cases, it checkes both the upper and lower case letters, also the value that is printed is the value stored in the variable ch and not the string ch. The code has also been to print the same output when any of the values a,b,c or d are entered.
The Internet began as a US Department of Defense network named Advanced Research Project Agency Network (ARPANET) funded by the Advanced Research Project Agency (ARPA, later DARPA). In the 1970s, universities and other educational institutions began sharing this technology. The network grew as more and more users began sharing information.However, the information being shared on this network was very limited because of its government ties. The ARPANET was decommissioned in 1990. This move was followed by the commercialization of the Internet, which allowed it to carry business and personal traffic.