azeval.cpp: In function 'bool se_gaseste(std::string, char)': azeval.cpp:10: warning: comparison between signed and unsigned integer expressions azeval.cpp: In function 'int recur(int, int)': azeval.cpp:93: warning: suggest parentheses around assignment used as truth value azeval.cpp:98: warning: suggest parentheses around assignment used as truth value azeval.cpp:104: warning: suggest parentheses around assignment used as truth value