Compilare: user.cpp: In function ‘int main()’: user.cpp:59:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( j=0;j<v[i].size();j++) ^ user.cpp:60:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=j+1;k<v[i].size();k++) ^ user.cpp:67:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<v[i].size();j++) ^ user.cpp:31:11: warning: unused variable ‘z’ [-Wunused-variable] { int n,z,a,b,d,i,j,nrp=0,r,t,nr,ma=-1,ok,nrmax; ^ user.cpp:31:17: warning: unused variable ‘d’ [-Wunused-variable] { int n,z,a,b,d,i,j,nrp=0,r,t,nr,ma=-1,ok,nrmax; ^ user.cpp: In function ‘void cit(int&)’: user.cpp:13:40: 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){fread(buff,1,DIM,fila); poz=0;} ^ user.cpp:20:42: 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){fread(buff,1,DIM,fila);poz=0;} ^ user.cpp: In function ‘int main()’: user.cpp:74:20: warning: ‘nrmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<' '<<nrmax; ^