Random int and double generator

[aarrll]

I've written the following code to generate random int or double numbers between given limits. When I run a build I get the error message "expression preceding parentheses of apparent call must have (pointer-to-) function type" for line 54. Does anyone know what I need to fix?

/*
* Program chapter 6_6
*
* This program generates and prints ten random integers
* Between user specified limits.
*/

#include <cstdlib> // required for srand(), rand().
#include <iostream> // required for cin, cout.
using namespace std;

// Function prototype.
int rand_int(int a, int b);

int main() {

	// Declare objects.
	int seed;
	char random_type, I, F;

	// Get seed value and interval limits.
	cout << "Enter a positive integer seed value: \n";
	cin >> seed;

	// Ask user "Do you want to generate integers or floats, enter I or F"
	cout << "Do you want to generate integers (I) or floats (F)? Enter I or F: \n";
	cin >> random_type;

	// IF statement to check random_type
	if (random_type == I) {
		// Seed the random number generator.
		unsigned int seed;
		int a, b;
		srand(seed);
		cout << "Enter integer limits a and b (a<b): \n";
		cin >> a >> b;

		// Generate and print ten random numbers.
		cout << "Random Numbers: \n";
		for (int k = 1; k <= 10; ++k) {
			cout << rand_int(a, b) << ' ';
		}
		cout << endl;
	} 
	else if (random_type == F) {
		// Ask user for float limits and accepts values for new float variable f1 and f2
		float rand_float, a, b;
		srand(seed);
		cout << "Enter float limits f1 and f2: \n";
		cin >> a >> b;

		cout << "Random Numbers: \n";
		for (double k = 1; k <= 10; ++k) {
			cout << rand_float(a, b) << " ";
		}
		cout << endl;
	}

	// Exit program.
	return 0;
}

/* This function generates a random integer
* between specified limits a and b (a<b).
*/
int rand_int(int a, int b) {
	return rand() % (b - a + 1) + a;
}

double rand_float(double a, double b) {
	return ((double)rand() / RAND_MAX) * (b - a) + a;
}

[jlb]

You have a variable and a function named rand_float() you can only have one identifier with the same name. Also you probably need a prototype for your function before you try to use it.