Compilare: user.cpp: In function ‘int main()’: user.cpp:12:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pokemon3.in", "r", stdin); ^ user.cpp:13:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pokemon3.out", "w", stdout); ^ user.cpp: In function ‘void cit(int&)’: user.cpp:9:114: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] inline void cit(int &x) { x = 0; while(ax[pz] < '0' || ax[pz] > '9') if(++pz == dim) fread(ax,1,dim,stdin),pz = 0; while(ax[pz] >= '0' && ax[pz] <= '9') { x = x * 10 + ax[pz] - '0'; if(++pz == dim) fread(ax,1,dim,stdin),pz = 0; } } ^ user.cpp:9:227: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] inline void cit(int &x) { x = 0; while(ax[pz] < '0' || ax[pz] > '9') if(++pz == dim) fread(ax,1,dim,stdin),pz = 0; while(ax[pz] >= '0' && ax[pz] <= '9') { x = x * 10 + ax[pz] - '0'; if(++pz == dim) fread(ax,1,dim,stdin),pz = 0; } } ^