Compilare: user.cpp: In function ‘char makeop(char, char, char)’: user.cpp:151:25: warning: ‘result’ may be used uninitialized in this function [-Wmaybe-uninitialized] return result ? '1' : '0'; ^ user.cpp: In function ‘bool eval(char*, int)’: user.cpp:160:43: warning: ‘pointer’ may be used uninitialized in this function [-Wmaybe-uninitialized] st[pointer - 2] = makeop(st[pointer - 2], postfix[i], st[pointer - 1]); ^