Compilare: user.cpp: In function ‘int main()’: user.cpp:120:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(inFile, "r", stdin); ^ user.cpp:121:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(outFile, "w", stdout); ^ user.cpp:126:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &X, &k); ^ user.cpp:158:29: warning: ‘dig’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol = sol * 10 + dig; ^