View Compilation Error

0_0_39045366_2977.cpp: In function 'int main()':
0_0_39045366_2977.cpp:16:16: error: expected primary-expression before ')' token
   16 |         while (){
      |                ^
0_0_39045366_2977.cpp:17:26: error: expected ';' before 'cout'
   17 |                 cin>>t>>x
      |                          ^
      |                          ;
   18 |                 cout<<t+x<<endl;
      |                 ~~~~