Compilare: user.cpp: In function ‘int main()’: user.cpp:13:23: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(p=strchr(s,')')) ^ user.cpp:28:24: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while (p=strchr(s,'(')) ^ user.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<strlen(s);i++) ^ user.cpp:33:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (s[i]!=' ' && i<strlen(s)) ^