Comma as a separator
A comma as a separator is used in multiple variable declarations and multiple arguments in a function call.
Syntax:
data_type var_name1, var_name2; //in variable declaration function_call(argument_1, argument_2); // in function call
Example 1:
C++
// C++ program to demonstrate// the use of comma as a// separator#include <iostream>using namespace std;int main(){ // using comma as a separator int num1 = 34, num2 = 45, num3 = 65; cout << num1 << " " << num2 << " " << num3 << endl; return 0;} |
Output
34 45 65
In the above program, we declare multiple variables declarations in a single line as separated by a comma. A comma acts here as a separator, not an operator.
Another example of multiple arguments is in a function call, where we used commas as a separator.
Example 2:
C++
// C++ program to demonstrate the use of comma as a// separator#include <iostream>using namespace std;// created a function for addition of numbersint add(int num1, int num2, int num3){ int result = num1 + num2 + num3; return result;}int main(){ // variable declaration int number1 = 5, number2 = 10, number3 = 15; // function calling using multiple arguments separated by // a comma int addition = add(number1, number2, number3); cout << addition << endl; return 0;} |
Output
30
In the main() function, add() function is called where we used a comma to separate multiple arguments.
Comma in C++
Comma (,) in C++ can work in three different contexts:
- Comma as an operator
- Comma as a separator
- Comma operator in place of a semicolon