/in/foo.cc: In function 'int main()':
/in/foo.cc:53:8: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
   else if(a+1==c)
        ^
/in/foo.cc:16:9: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
   int a,b,c;
         ^
/in/foo.cc:53:12: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]
   else if(a+1==c)
            ^