Compilare: user.cpp: In function ‘int main()’: user.cpp:41:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( j=0 ; j<L[p].size() ; j ++ ){ ^ user.cpp:26:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&m); ^ user.cpp:28:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&x[i].a,&x[i].b,&x[i].c); ^ user.cpp:31:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&a,&b); ^