Code won't compile

Question

I can't get this code to compile:

#include<iostream>
using namespace std;

void readinput(int n1, int n2);
void swap(int n1, int n2);
void toprint(int n1, int n2);

int main()
{
    int n1;
    int n2;
    
    readinput(n1,n2);
    swap(n1,n2);
    toprint(n1,n2);
}
void readinput(int &n1, int &n2)
{
    n1 = 10;
    n2 = 5;
}
void swap(int &n1, int &n2)
{
    int temp;
    temp = n1;
    n1 = n2;
    n2 = temp;
}
void toprint(int n1, int n2)
{
    cout<<n1<<" "<<n2<<"\n";
}

Answer 1

you forgot to put & in your signature of function.
Here is working example of yours.

https://onlinegdb.com/H1jesQW6f

Comments

Thank you very much!