c++复习资料及答案(4)

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#include

main( )

{int num; char grade; cout<<“please input num:”; cin>>num;

if((grade>=90)&&(grade<=100) grade=”A”; cout<<“The grade is:”<

else if (grade>=80) grade=”B”; cout<<“The grade is:”<

else if (grade>=70) grade=”C”; cout<<“The grade is:”<

else if (grade>=60) grade=”D”; cout<<“The grade

is:”<

else grade=”E”; cout<<“The grade

is:”<

endif

endif

endif

endif } 4、填空题：

(1) 以下程序通过调用自定义函数scopy( )将字符串s1复制到字符串

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s2，并输出显示，请填空。

char *p , char *q *q=*p; p++; q++; scopy(s1, s2); (2) new int [n] ; //分配长度为n的动态数组

~A() { delete [ ]a ; } //定义析构函数，释放动态数组空间

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