C++ Primer Plus

Multiple Arguments

A function can have more than one argument. In the function call, you just separate the arguments with commas:

n_chars('R', 25);

This passes two arguments to the function n_chars(), which will be defined shortly.

Similarly, when you define the function, you use a comma-separated list of parameter declarations in the function header:

void n_chars(char c, int n)  // two arguments

This function header states that the function n_chars() takes one type char argument and one type int argument. The parameters c and n are initialized with the values passed to the function. If a function has two parameters of the same type, you have to give the type of each parameter separately. You can’t combine declarations the way you can when you ...