求C++高手帮忙解决新手问题！！！！！！

1．
a) int x; cint >>x;
b) int y; cint >>y;
c) int i=1;

d) int power=1;
e) power = power * x;

f) i++;
g) if ( i<=y)

h) cout << power;

2．
a) 情况1输出
*****
$$$$$
情况2输出

$$$$$
b)
情况1输出
*****
情况2输出

#####

$$$$$
3．
a)
if ( y == 8 )
if ( x == 5 )
{

cout << “#####” << endl;
cout << “$$$$$” << endl;
cout << “&&&&&” << endl;
}

else

cout << “@@@@@” << endl;

b) 假定x=5，y=8，产生的输出如下所示。
if ( y == 8 )
if ( x == 5 )
cout << “@@@@@” << endl;
else

{
cout << “#####” << endl;
cout << “$$$$$” << endl;
cout << “&&&&&” << endl;
}

c)
if ( y == 8 )
{

if ( x == 5 )
cout << “@@@@@” << endl;
else
{
cout << “#####” << endl;
cout << “$$$$$” << endl;
}
cout << “&&&&&” << endl;
}

d)
if ( y == 8 )
{

cout << “#####” << endl;
}
else
{

if ( x == 5 )
cout << “@@@@@” << endl;
else
cout << “$$$$$” << endl;
cout << “&&&&&” << endl;
}

4． 编程
#include
main()
{
int score;
cin << score;
if (score >=90)
cout << “优秀”;
else if (score>=80)
cout <<“良好”;
else if (score>=70)
cout <<“中等”;
else if(score>=60)
cout <<“及格”;
else
cout <<“不及格”;
return 0;
}