foo.cc: In function ‘int main()’:
foo.cc:6:9: error: ‘ciin’ was not declared in this scope
6 | ciin>>a>>b;
| ^~~~
foo.cc:7:9: error: ‘cout’ was not declared in this scope
7 | cout << a+b << endl;
| ^~~~
foo.cc:2:1: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
1 | #include <stdio.h>
+++ |+#include <iostream>
2 | using namespace std;
foo.cc:7:24: error: ‘endl’ was not declared in this scope
7 | cout << a+b << endl;
| ^~~~
foo.cc:2:1: note: ‘std::endl’ is defined in header ‘<ostream>’; did you forget to ‘#include <ostream>’?
1 | #include <stdio.h>
+++ |+#include <ostream>
2 | using namespace std;