/in/foo.cc: In function 'int main()':
/in/foo.cc:7:27: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'int' [-Wformat=]
         scanf("%d%d", a, b);
                           ^
/in/foo.cc:7:27: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'int' [-Wformat=]
/in/foo.cc:7:28: warning: 'a' is used uninitialized in this function [-Wuninitialized]
         scanf("%d%d", a, b);
                            ^
/in/foo.cc:7:28: warning: 'b' is used uninitialized in this function [-Wuninitialized]