Fifth chapter structure data type (II.)

Question Fourth:
#include <iostream>
using namespace Std;

int main ()
{
Double htemp[7];
Double ltemp[7];
for (int i=0;i<7;++i) {
if (i==0)
cout<< "Today is Sunday, please enter today's temperature value:" <<endl;
Else
cout<< "Today is the Week" <<i<<, please enter today's temperature value: "<<endl;

cout<< "Maximum temperature:";
CIN >> Htemp[i];
cout<< "Minimum temperature:";
CIN >> Ltemp[i];
while (htemp[i]<ltemp[i]| | htemp[i]<0| | ltemp[i]<0) {
cout<< "You enter the temperature value is wrong, please lose" <<endl;
cout<< "Maximum temperature:";
CIN >> Htemp[i];
cout<< "Minimum temperature:";
CIN >> Ltemp[i];
}
}

Calculation temperature
Double avgh=0;
Double avgl=0;
for (int i=0;i<7;++i) {
Avgh+=htemp[i];
Avgl+=ltemp[i];
}
AVGH=AVGH/7;
AVGL=AVGL/7;
cout<< "This week the average maximum temperature is" <<avgH<< "degree. "<<endl;
cout<< "This week the average minimum temperature is" <<avgL<< "degree. "<<endl;
return 0;
}

Question Fifth:
#include <iostream>
using namespace Std;

int main ()
{
cout<< "Please input a int Value:" <<endl;
int ivalue;
cin>>ivalue;

if (ivalue<=0) {
cout<< "must be Positive" <<endl;
return 0;
}
Count
int temp=ivalue;
int icount=0;
while (temp) {
TEMP=TEMP/10;
icount++;
}
int *iarr=new Int[icount];

Temp=ivalue;
for (int i=0;i<icount;i++)
{
iarr[i]=temp%10;
temp/=10;
}

int i,j;
For (I=0,j=icount-1;i<j;++i,--J)
{
if (Iarr[i]!=iarr[j])
Break
}

if (I&GT;=J)
cout<< "This is palindrome number" <<endl;
Else
cout<< "This is not a palindrome number" <<endl;

delete []iarr;

return 0;
}

Question seventh:
#include <iostream>
#include <cmath>
using namespace Std;

struct root{
Double X1;
Double X2;
BOOL BRT;
};

Root Func2 (Double A, double b, double c) {
Judge whether there are real roots
if (b*b-4*a*c<0) {
cout<< "This equation has no real roots" <<endl;
Root RT;
rt.x1=rt.x2=0;
Rt.brt=false;
return RT;
}

root root;

Double sq=sqrt (B*B-4*A*C);
root.x1= (-B+SQ)/(2*A);
Root.x2= (-B-SQ)/(2*A);
Root.brt=true;

return root;
}

int main ()
{
Root Rt=func2 (1,-1,-6);
if (RT.BRT)
cout<< "x1=" <<rt.x1<< "/nx2=" <<rt.x2<<endl;

return 0;
}

Question eighth:
#include <iostream>
#include <cstring>
using namespace Std;

int main ()
{
cout<< "Please enter a string" <<endl;
Char str[50];
cin>>str;

int icap=0;
int ismall=0;
int num=0;
for (int i=0;str[i]!= '/0 '; ++i) {
if (str[i]>= ' A ' &&str[i]<= ' Z ')
++icap;
if (str[i]>= ' 0 ' &&str[i]<= ' 9 ')
++num;
if (str[i]>= ' a ' &&str[i]<= ' Z ')
++ismall;
}

cout<< "This string has a capital letter" <<iCap<< "a" <<endl;
cout<< "This string has lowercase letters" <<iSmall<< "a" <<endl;
cout<< "This string has number" <<num<< "a" <<endl;

return 0;
}