Eroare de compilare: user.cpp: In function ‘int main(int, const char**)’: user.cpp:28:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] in>>sir + 1; ^ user.cpp:38:38: error: ‘sort’ was not declared in this scope sort(litere.begin(), litere.end()); ^ user.cpp:40:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < litere.size(); ++ i){ ^ user.cpp:74:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < interv.size(); ++ i){ ^ user.cpp:71:9: warning: unused variable ‘st’ [-Wunused-variable] int st = 1; ^