Compilare: user.cpp: In function ‘void shr(unsigned int*, int)’: user.cpp:84:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=p+1;i<=a[0];i++) a[i-p]=a[i]; ^ user.cpp: In function ‘int main()’: user.cpp:106:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numar4.in","r",stdin); ^ user.cpp:107:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numar4.out","w",stdout); ^ user.cpp: In function ‘char GetChar()’: user.cpp:9:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,1,BUF_SIZE,stdin); ^