C++ LANGUAGE FUNCTION PAGE 65

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C++ LANGUAGE FUNCTION

FUNCTIONS 


A function is a group of statements that together perform 
a task. Every C++ program has at least one function, which 
is main(), and all the most trivial programs can define 
additional functions. 

You can divide up your code into separate functions. How you 
divide up your code among different functions is up to you, 
but logically the division usually is such that each function 
performs a specific task. 
A function declaration tells the compiler about a function's 
name, return type, and parameters. A function definition 
provides the actual body of the function. 
The C++ standard library provides numerous built-in functions 
that your program can call. For example, function strcat() to 
concatenate two strings, function memcpy() to copy one memory 
location to another location, and many more functions. 
A function is known with various names like a method or 
a sub-routine or a procedure etc.