Compilare: user.cpp: In function ‘int main()’: user.cpp:64:17: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin>>str+1; ^ user.cpp:58:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("klsecv.in", "r", stdin); ^ user.cpp:59:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("klsecv.out", "w", stdout); ^