foo.cc: In function 'int main()':
foo.cc:36:1: error: expected '}' at end of input
 {
 ^
foo.cc:33:9: warning: unused variable 'y' [-Wunused-variable]
 int A,B,y=0,sum=0;
         ^
foo.cc:33:13: warning: unused variable 'sum' [-Wunused-variable]
 int A,B,y=0,sum=0;
             ^~~
foo.cc:36:1: error: expected '}' at end of input
 {
 ^

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