“lvalue required as left operand of assignment” in “if” part. How can i correct my code ??

Question

#include <iostream>
using namespace std;

int main() {
int t, n, a, b, c;
cin>>n;
for (t=0; t<n; t++){
while(cin>>a>>b>>c){
if ((a+b>c || a+c>b || b+c>a) && (a=b || b=c || a=c ))
cout<< "1" << "1" ;
else if ((a+b>c || a+c>b || b+c>a) && (a=!b || b=!c || a=!c ))
cout << "1"<<"0" ;
else
cout << "0" <<endl;
}
}
return 0;
}

Answer 1

use ==
not =

== for comparing
= for assigning

Answer 2

okey i corrected them and it worked
thank you ;)