#include

bool grade$(char$ correctAnswers$[],$ char studentAnswers$[])\{$

int correctCount $=0$;

int incorrectCount $=0$;

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

$if(correctAnswers[i]==$ studentAnswers$[i])\{$

correctCount$++$;

$\}$ else $\{$

incorrectCount$++$;

$\}$

$\}$

$if(correctCount8)\{$

$std$::cout $<<$ "Congratulations!" $<<std$::endl;

$std$::cout $<<$ "You have passed the exam." $<<std$::endl;

$std$::cout $<<$ "Total number $of$ correct answers: $"<<$ correctCount $<<std$::endl;

$std$::cout $<<$ "Total number $of$ incorrect answers: $"<<$ incorrectCount $<<std$::endl;

return true;

$\}$ else $\{$

$std$::cout $<<$ "Sorry, you have not passed the exam!" $<<std$::endl;

$std$::cout $<<$ "Total number $of$ correct answers: $"<<$ correctCount $<<std$::endl;

$std$::cout $<<$ "Total number $of$ incorrect answers: $"<<$ incorrectCount $<<std$::endl;

return false;

$\}$

$\}$

int main$()\{$

char correctAnswers$[]=\{\text{'}B\text{'},\text{'}D\text{'},\text{'}A\text{'},\text{'}A\text{'},\text{'}C\text{'},\text{'}A\text{'},\text{'}B\text{'},\text{'}A\text{'},\text{'}C\text{'},\text{'}D\text{'}\}$;

char studentAnswers$[10]$;

int invalidInputCount $=0$;

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

char answer;

$do\{$

$std$::cout $<<$ "Enter answer #$"<<i+1<<"$:

$"$;

$std$::cin $>>$ answer;

$if(answer\text{'}A\text{'}$ && answer $\text{'}B\text{'}$ && answer $\text{'}C\text{'}$ && answer $\text{'}D\text{'})\{$

$std$::cout $<<$ "Error! Only $A,B,C,$ and $D$ are valid answers. Please try again." $<<std$::endl;

invalidInputCount$++$;

$\}$

$if(invalidInputCount>3)\{$

$std$::cout $<<$ "GOODBYE" $<<std$::endl;

return $0$;

$\}$

$\}$ while $(answer\text{'}A\text{'}$ && answer $\text{'}B\text{'}$ && answer $\text{'}C\text{'}$ && answer $\text{'}D\text{'})$;

studentAnswers$[i]=$ answer;

$\}$

grade$(correctAnswers,$ studentAnswers$)$;

return $0$;

$\}$