Eroare de compilare: user.cpp: In function ‘int readInt()’: user.cpp:38:24: error: ‘isdigit’ was not declared in this scope } while ( !isdigit( c ) ); ^ user.cpp: In function ‘int main()’: user.cpp:49:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("slidingwindow.in", "r", stdin); ^ user.cpp:50:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("slidingwindow.out", "w", stdout); ^ user.cpp: In function ‘char getChr()’: user.cpp:22:33: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, Bsize, stdin); ^