Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:12:25: error: invalid conversion from ‘char’ to ‘const char*’ [-fpermissive] lungime_sir=strlen(c); ^ In file included from user.cpp:3:0: /usr/include/string.h:394:15: note: initializing argument 1 of ‘size_t strlen(const char*)’ extern size_t strlen (const char *__s) ^ user.cpp:13:19: error: ‘lungime’ was not declared in this scope for(int i=0;i<lungime;i++){ ^ user.cpp:14:15: error: invalid types ‘char[int]’ for array subscript if(c[i]=="("){ ^ user.cpp:20:15: error: ‘lungime’ was not declared in this scope for(int i=lungime-1;i>=0;i--){ ^ user.cpp:21:15: error: invalid types ‘char[int]’ for array subscript if(c[i]==")"){ ^