Compilare: user.cpp: In function ‘int main()’: user.cpp:31:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] crt = poz[pct]; ok = false; ^ user.cpp:39:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (crt != poz[pct] || C != Cf || !ok) ^ user.cpp:64:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] crt = poz[pct]; ^ user.cpp:18:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cern.in","r",stdin); ^ user.cpp:19:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cern.out","w",stdout); ^ user.cpp:21:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c\n", &pct); ^ user.cpp:23:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &sens , &tmp); ^