Compilare: main.cpp: In function 'bool OR()': main.cpp:20:1: warning: no return statement in function returning non-void [-Wreturn-type] 20 | } | ^ main.cpp: In function 'bool AND()': main.cpp:29:1: warning: no return statement in function returning non-void [-Wreturn-type] 29 | } | ^ main.cpp: In function 'bool NOT()': main.cpp:38:1: warning: no return statement in function returning non-void [-Wreturn-type] 38 | } | ^ main.cpp: In function 'int main()': main.cpp:59:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(i=0; i<s.size(); i++) | ~^~~~~~~~~ main.cpp:61:43: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 61 | if(s[i]==' '||s[i]=='('||s[i]==')'&&s[lastptr]!=' ') main.cpp:85:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for(int j=0; j<com.size(); j++) | ~^~~~~~~~~~~