Compilare: user.cpp: In function ‘int main()’: user.cpp:32:20: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> par + 1 ; ~~~~^~~ user.cpp:25:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("brackets2.in","r",stdin); ^ user.cpp:26:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("brackets2.out","w",stdout); ^