Compilare: main.cpp: In function 'int eval(int&)': main.cpp:34:18: warning: unused variable 'sign' [-Wunused-variable] 34 | int ret = 0, sign = 1; | ^~~~ main.cpp: In function 'int eval1(int&)': main.cpp:86:17: warning: 'num' may be used uninitialized [-Wmaybe-uninitialized] 86 | ret /= num; | ~~~~^~~~~~ main.cpp:76:17: note: 'num' was declared here 76 | int num; | ^~~ main.cpp:72:17: warning: 'num' may be used uninitialized [-Wmaybe-uninitialized] 72 | ret *= num; | ~~~~^~~~~~ main.cpp:62:17: note: 'num' was declared here 62 | int num; | ^~~ main.cpp:95:12: warning: 'ret' may be used uninitialized [-Wmaybe-uninitialized] 95 | return ret; | ^~~ main.cpp:55:9: note: 'ret' was declared here 55 | int ret; | ^~~