Compilare: user.cpp: In function ‘int eval()’: user.cpp:26:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(*p='+') ^ user.cpp:31:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(*p='-') ^ user.cpp: In function ‘int termen()’: user.cpp:45:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(*p='*') ^ user.cpp:50:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(*p='/') ^ user.cpp: In function ‘int factor()’: user.cpp:64:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(*p='(') ^