#include

#include

#include

#include

using namespace std;

$//$ function to print the last name of the student

void printLastName$($string name$)\{$

cout $<<$ name.substr$($name$.$find$\_$last$\_$of$("")+1)<<""$;

$\}$

$//$ function to compute and print the grade percentage and letter grade

void computeGrade$($int score, int total$)\{$

double percentage $=($double$)$score $/$ total $*100\mathrm{.}0$;

double roundedPercentage $=$ ceil$($percentage $*100000\mathrm{.}0)/100000\mathrm{.}0$;

cout $<<$ roundedPercentage $<<"\%"$;

if $($percentage $>=90)\{$

cout $<<$ "Excellent" $<<$ endl;

$\}$

else if $($percentage $>=80)\{$

cout $<<$ "Well Done" $<<$ endl;

$\}$

else if $($percentage $>=70)\{$

cout $<<$ "Good" $<<$ endl;

$\}$

else if $($percentage $>=60)\{$

cout $<<$ "Need Improvement" $<<$ endl;

$\}$

else $\{$

cout $<<$ "Fail" $<<$ endl;

$\}$

$\}$

int main$()\{$

$//$ open input file

ifstream myfile $("$students$.$txt$")$;

if $(!$input.is$\_$open$())\{$

cerr $<<$ "Failed to open file." $<<$ endl;

return $1$;

$\}$

$//$ read data for each student

string name;

int score, total;

for $($int i $=0$; i $<10$; i$++)\{$

input $>>$ name $>>$ score $>>$ total;

$//$ compute and print the grade for the student

printLastName$($name$)$;

computeGrade$($score$,$ total$)$;

$\}$

$//$ close input file

input.close$()$;

return $0$;

$\}$

I cannot get this program to import the file. What am I doing wrong $?$I have the file saved as students in that same folder.