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How to pass parameters and arguments to a function in C++
Onyejiaku Theophilus ChidaluOverview
In C++, a parameter is a variable that is defined while creating a function. When a function is called, these variables either take or receive arguments. An argument in C++ is the value that is passed to a function whenever that specific function is called.
Furthermore, a parameter is specified inside a parenthesis () right
after the function name. We can add as many parameter values as we wish to inside a function.
Syntax
To pass a parameter and/or argument values to a function, we use the following syntax:
void nameOfFunction(parameter1, parameter2)
{
// block of code to be executed
}
intmain()
{ // calling the function
nameOfFunction(argument1, argument2);
return 0;
}Function syntax
Code example
In the code below, we will create a function that takes a single parameter. Whenever we call the function, we pass an argument to the function.
#include <iostream>
#include <string>
using namespace std;
void myFunction(string myname) {
cout << myname << " Onyejiaku\n";
}
int main() {
// calling the function
myFunction("Theophilus");
myFunction("Chidalu");
return 0;
}Passing a parameter and an argument to a function
Code explanation
- Line 5: We declare a function
myfunctionand pass a parametermynameto the function. - Line 6: We create a code block to be executed whenever the function is called.
- Line 10: We call the function, and this time it passes the argument
"Theophilus"to the function. - Line 11: We call the function again, and this time it passes the argument
"Chidalu"to the function.
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function
arguments
parameter
c++
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