foo.cc: In function 'int maxyue(int, int)':
foo.cc:29:13: warning: unused variable 'y' [-Wunused-variable]
29 | int y;
| ^
foo.cc: In function 'int main()':
foo.cc:90:30: warning: 'fm' may be used uninitialized [-Wmaybe-uninitialized]
90 | cout << fz << " " << fm << endl;
| ^~
foo.cc:81:17: note: 'fm' was declared here
81 | int fz, fm;
| ^~
foo.cc:90:23: warning: 'fz' may be used uninitialized [-Wmaybe-uninitialized]
90 | cout << fz << " " << fm << endl;
| ^~~
foo.cc:81:13: note: 'fz' was declared here
81 | int fz, fm;
| ^~
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