foo.cpp:51:5: error: stray '\243' in program
foo.cpp:51:5: error: stray '\272' in program
foo.cpp: In function 'int abs(int)':
foo.cpp:51:21: error: expected ':' before ';' token
foo.cpp:51:21: error: expected primary-expression before ';' token
foo.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type]