Compilare: user.cpp: In function ‘int main()’: user.cpp:63:12: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,k,a,b,x,m; ^ user.cpp:63:14: warning: unused variable ‘k’ [-Wunused-variable] { int i,j,k,a,b,x,m; ^ user.cpp:63:20: warning: unused variable ‘x’ [-Wunused-variable] { int i,j,k,a,b,x,m; ^ user.cpp: In function ‘void cit(int&)’: user.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(poz==DIM){poz=0;fread(buff,1,DIM,fila);} ^ user.cpp:28:50: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(poz==DIM){poz=0;fread(buff,1,DIM,fila);} ^