determining integer/non-integer value

hi,
how do i write a program which determines whether the value entered is integer or non-integer by using only control structures.
thanks

i have no idea what you mean by "control structures".

but you can determine if a string is float by testing for the "." eg....
and you can test for the int-value being "0" and it not being the string "0".
could you please post more information about your specific problem?

sorry about being unclear....
what i wanted to do is
check the user entered value & see whether it's an integer or non-integer....
i'm allowed to use only if,for & while (control structures) & only allowed to use <iostream> or <iostream.h>

thanks for the effort

Basically loop through the string and if you find a character that's not '0' - '9'

return false.

maybe it'll make more sense if i explain the whole thing...

i want to constantly ask the user whether he/she wants to enter a value(y/n)

if 'y'...
i want to test the value for integer/nonInteger & even/odd & add to the counter accordingly....
if 'n'
if dispalys
1)no. of values entered
2)odd values entered
3)even values entered
4)sum
5)average
6)integer values entered
7)nonInteger values entered


here's what i have so far

#include <iostream.h>


void main()
{
int value,sum=0,average=0;
char response;
int valueCount=0, intCount=0, nonIntCount=0;
int evenCount=0, oddCount=0;

cout <<"\nDo you want to enter a value? (y/n): ";
cin >>response;

while ((response|32)=='y'){
cout<<"\nEnter your Value: ";
cin >>value;
sum=sum+value;

valueCount=valueCount+1;

if (value%2==0)
evenCount=evenCount+1;

else oddCount=oddCount+1;

cout<<"\nDo you want to enter a value? (y/n): ";
cin>>response;
}

average=sum/valueCount;

cout<<"\nThe number of Values you entered is: "
<<valueCount;
cout<<"\nThe sum of all the values you entered is: "
<<sum;
cout<<"\nThe average of the values you entered is: "
<<average;
cout<<"\nThe number of interger values you entered is: "
<<intCount;
cout<<"\nThe number of non-integer values you entered is: "
<<nonIntCount;
cout<<"\nThe number of even values you entered is: "
<<evenCount;
cout<<"\nThe number of odd values you entered is: "
<<oddCount<<endl<<endl;
}

p.s. i've been able to test the value for odd/even if it' s an integer value but changing it to float '%' doesn't seem to work


thanks for all the help