Compilare: user.cpp: In function ‘int main()’: user.cpp:43:15: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> s[0] + 1 >> s[1] + 1 >> s[2] + 1; ~~~~~^~~ user.cpp:43:27: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> s[0] + 1 >> s[1] + 1 >> s[2] + 1; ~~~~~^~~ user.cpp:43:39: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> s[0] + 1 >> s[1] + 1 >> s[2] + 1; ~~~~~^~~ user.cpp:36:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("entropy.in", "r", stdin); ^ user.cpp:37:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("entropy.out", "w", stdout); ^