Please what's wrong with my code?

Question

#include<iostream>
#include<string>
using namespace std;

void swapmessage(string&str1,string,str2);
void swapmessage(string&str1,string,str2)
{
void swapmessages: string temp=str1;
str1=str2;
str2=temp;
}
int main(){
string s1="hello ";
string s2="good afternoon";
cout<<"Before swapping:"<<s1<<","<<s2<<"\n";
swapmessage(s1,s2);
cout<<"After swapping:"<<s1<<","<<s2<<"\n";

return 0;
}#include<iostream>

Answer 1

// here you can check where are differences:

#include<iostream>
#include<string>
using namespace std;

void swapmessage(string &str1, string &str2)
{
string temp=str1;
str1=str2;
str2=temp;
}

int main(){
string s1="hello ";
string s2="good afternoon";
cout<<"Before swapping:"<<s1<<","<<s2<<"\n";
swapmessage(s1,s2);
cout<<"After swapping:"<<s1<<","<<s2<<"\n";

return 0;
}

Answer 2

do you really need to define a function for this? Why not just use swap? I would say the main thing that's wrong, other than obvious syntax errors, is that it is an unnecessary function...

#include<iostream>
using namespace std;

int main(){
string s1="hello ";
string s2="good afternoon";

cout<<"Before swapping:\ns1 = "<<s1<<"\ns2 = "<<s2<<"\n";

swap(s1,s2);

cout<<"\nAfter swapping:\ns1 = "<<s1<<"\ns2 = "<<s2<<"\n";
}

Answer 3

Ok i got it thanks [Listen Once🌙] Bob_Li JaScript