What’s the correct solution to this? i have literally compiled it 6 times and it keeps showing error everytime. gdb compiler gives the correct output

#include<iostream>
using namespace std;
int fact(int);
int fact (int n){
    int i,f=1;
    for(i=1;i<=n;i++)
    {
        f=f*i;
    }
    return f;
}
int main(){
    int n,m;
    cout<<"Enter number"<<endl;
    cin>>n;
    m=fact(n);
    cout<<"Factorial of a number is"<<m<<endl;
    return 0;
}