Compilare: user.cpp: In function ‘int back(int, int)’: user.cpp:34:13: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k, set; ^ user.cpp: In function ‘int main()’: user.cpp:76:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sablon.out", "w", stdout); ^ user.cpp:79:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s%d", mask, &N); ^ user.cpp:82:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", word); ^