Compilare: main.cpp: In function 'void cit(int&)': main.cpp:21:50: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] if(++pz==DIM) fread(vec,1,DIM,stdin),pz=0; ^ main.cpp:24:49: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] if(++pz==DIM)fread(vec,1,DIM,stdin),pz=0; ^ main.cpp: In function 'int main()': main.cpp:49:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("trilant.in","r",stdin); ^ main.cpp:50:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("trilant.out","w",stdout); ^