求大神救命呀~

在线等，比较急，望高手相助一下下，不胜感激

easy LZ等我10分钟搞定

#include "iostream"
#include "string"
#include "time.h" using namespace std; struct TestInfo
{
char strTest[10]; //题目
float answer[10]; //标准答案
};
struct StudentInfo
{
string name;
int age;
TestInfo t[10];
int score; //成绩
int rights; //答对题目数目
float ans[10];
}; int main( )
{
StudentInfo stu;
stu.rights = 0;
stu.score = 0;
srand((unsigned)time(NULL)); //产生种子
for ( int i = 0; i < 10; i++ )
{
int nType = rand()%4 ; //代表加减乘除4中运算规则
int a = rand()%100;
int b = rand()%100;
switch ( nType )
{
case 0:
sprintf_s( stu.t[i].strTest, "%d + %d =", a, b );
stu.t[i].answer[i] = a + b;
break;
case 1:
sprintf_s( stu.t[i].strTest, "%d - %d =", a, b );
stu.t[i].answer[i] = a - b;
break;
case 2:
sprintf_s( stu.t[i].strTest, "%d * %d =", a, b );
stu.t[i].answer[i] = a * b;
break;
case 3:
sprintf_s( stu.t[i].strTest, "%d / %d =", a, b );
stu.t[i].answer[i] = a / b;
break;
}
}
float youranswer;
cout<<"Please input your name:\t";
cin>>stu.name;
cout<<"Please input your age:\t";
cin>>stu.age;
for ( int i = 0; i < 10; i++ )
{
cout<<stu.t[i].strTest;
cin>>youranswer;
stu.ans[i] = youranswer;
if ( youranswer == stu.t[i].answer[i] )
{
stu.rights += 1;
}
} stu.score *= stu.rights;
cout<<"\nThere is your test information:\n";
cout<<"Name:"<<stu.name<<"\tAge:"<<stu.age<<endl;
cout<<"\t\tText\t\t"<<"Your answer\t"<<"Corect anwer\n";
for ( int i = 0; i < 10; i++ )
{
cout<<"The "<<i<<" test is:\t"<<stu.t[i].strTest<<'\t'<<stu.ans[i]<<"\t\t"<<stu.t[i].answer[i]<<endl;
}
cout<<'\n'<<"Score:"<<stu.score<<endl;
}