C++ functions..?

Question

how can i write a c++ function (reverseDigit) that takes an integer as a parameter and returns the number with its digits reversed. for example the value of reverseDigit(12345) is 54321 .. the value of reverseDigit(5600) is 65 .. and the value of reverseDigit(-532) is -235..

Answer 1

int reverse_Digits(int rev) //Reverse the digits of the input
{
int num1 = rev, //Assigning constant from int main() to variable
rnum = 0, //Variable to hold reversed number
digit; //Holds number extracted by % function to be added to rnum

while (num1 > 0) //While loop to reverse digits
{
rnum *= 10;
digit = num1 % 10;
rnum += digit;
num1 /= 10;
}
return rnum;

}