Compilare: user.cpp: In function ‘long long unsigned int pow(long long unsigned int, long long unsigned int)’: user.cpp:62:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; (1 << i) <= b; i ++) ^ user.cpp: In function ‘int main()’: user.cpp:127:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare2.out","w",stdout); ^ user.cpp:134:29: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(exp,1,lSize,pFile); ^