Explain a. casting b. overloading c. sentinel d. echoSolution.pdf
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The document explains key programming concepts: casting, which is converting one datatype to another; overloading, which refers to multiple functions sharing the same name but differing in signature; and sentinel, a flag value used for loop termination. Additionally, it defines 'echo' as a PHP keyword for outputting messages or variables. Examples are provided for clarity.
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Explain a. casting b. overloading c. sentinel d. echoSolution.pdf
- 1. Explain: a. casting b. overloading c. sentinel d. echo Solution Casting- Changing the datatype of 1 variable to another datatype is called casting. Each program has its own rule. eg: int can be converted to double. overloading- Multiple function when used with same name but have different signature is called overloading in programs. sentinel- It is the flag value that is used in loop like for loop or while which is used for the termination of loops or recursive algorithm. eg flag=1 while(flag<5) { ..... } echo- It is the keyword that is used to print the message or variable in the PHP language echo "Hi"; It will print Hi on screen.