Information can be passed to functions as a parameter. Parameters act as variables inside the function.
Parameters are specified after the function name, inside the parentheses. You can add as many parameters as you want, just separate them with a comma:
Syntax
void functionName(parameter1, parameter2, parameter3) {
// code to be executed
}
// code to be executed
}
The following example has a function that takes a string called fname as parameter. When the function is called, we pass along a first name, which is used inside the function to print the full name:
Example
void myFunction(string fname) {
cout << fname << " Refsnes\n";
}
int main() {
myFunction("Liam");
myFunction("Jenny");
myFunction("Anja");
return 0;
}
// Liam Refsnes
// Jenny Refsnes
// Anja Refsnes
cout << fname << " Refsnes\n";
}
int main() {
myFunction("Liam");
myFunction("Jenny");
myFunction("Anja");
return 0;
}
// Liam Refsnes
// Jenny Refsnes
// Anja Refsnes
When a parameter is passed to the function, it is called an argument. So, from the example above:
fname is a parameter, while Liam, Jenny and Anja are arguments. Practice Excercise Practice now