In this post, we will write a **C++ program to display the Fibonacci series using the function**.

## C++ program to display the Fibonacci series using function.

```
#include<iostream>.
#include<conio.h>
int fib(int);
int main()
{
system("cls");
int n;
std::cout<<"Enter the number you want to series ";
std::cin>>n;
std::cout<<"0"<<"\t";
fib(n);
getch();
return 0;
}
int fib(int n)
{
double c,d,i,e;
c = 1;
d = 0;
for(i=1;i<=n;i++)
{
e = c+d;
c = d;
d = e;
std::cout<<e<<"\t";
}
}
```

### Output

Enter the number you want to series = 10 0 1 1 2 3 5 8 13 21 34 55

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