Compilare: user.cpp: In function ‘int EvaluateExpression(char*, int)’: user.cpp:44:16: warning: value computed is not used [-Wunused-value] Op[++OpSize]==2; ^ user.cpp:72:18: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] Var[++VarSize]==config&(1<<alpha[s[i]-'a'+1]); ^ user.cpp:72:26: warning: value computed is not used [-Wunused-value] Var[++VarSize]==config&(1<<alpha[s[i]-'a'+1]); ^ user.cpp: In function ‘int main()’: user.cpp:82:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d ",&N); ^ user.cpp:87:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%s%s",str1+1,str2+1); ^