Compilare: user.cpp: In function ‘int main()’: user.cpp:84:33: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 3 has type ‘int’ [-Wformat=] fprintf(pF,"%ld \n",0); ^ user.cpp:50:5: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp:51:5: warning: unused variable ‘mn’ [-Wunused-variable] int mn,k,man,j; ^ user.cpp:51:8: warning: unused variable ‘k’ [-Wunused-variable] int mn,k,man,j; ^ user.cpp:51:10: warning: unused variable ‘man’ [-Wunused-variable] int mn,k,man,j; ^ user.cpp:51:14: warning: unused variable ‘j’ [-Wunused-variable] int mn,k,man,j; ^ user.cpp:52:5: warning: unused variable ‘nmx’ [-Wunused-variable] int nmx=10000; ^ user.cpp:37:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%d",&nr[i][1]); ^ user.cpp:38:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile,"%d",&nr[i][2]); ^