Thread: getting NOT A FUNCTION error

Hey, I got this program where I have to write simple functions to calculate the time and cost for a roadtrip. I keep on getting errors on the travelTime() and travelcost() functions. The errors are error C2063: 'travelTime' : not a function and error C2063: 'travelcost' : not a function. Here is my code and any help would be appreciated.

Code:

#include <stdio.h>

#define MINUTES 60;

/*function prototype*/
int roundUp(float);
float travelTime(int, int, int);
float travelcost(int, int, float, float);

/*Main Function*/
int main()
{


	/*declaire variables*/
	int miles, carGasMileage, gasTankSize = 15, averageSpeed, restTime;
	float pricePerGall = 1.40, travelTime, travelcost, fillupTimes, mealCost;

	/*Get miles variable*/
	printf("How many miles are you going to travel?: ");
	scanf("%d", &miles);
	

	/*Get car gas mileage*/
	printf("\nWhat is the gas mileage that your car gets?: ");
	scanf("%d", &carGasMileage);

	/*Get average speed*/
	printf("\nWhat is the average spped that you want to travel in mph units?: ");
	scanf("%d", averageSpeed);

	/*Get rest time--NOTE I had to eliminate the Brother rest time for this program-There had to be only one rest time*/
	printf("\nHow many minutes do you plan on resting?: ");
	scanf("%d", &restTime);
	
	/*Get meal cost*/
	printf("\nHow much will you spend on meals?: ");
	scanf("%f", &mealCost);

	/*clear screen*/
	system("cls");

	/*calculate the time*/
	travelTime(miles, averageSpeed, restTime);

	/*calculate the cost*/
	travelcost(miles, carGasMileage, pricePerGall);

	

	/*calculate the times that they will need to fill-up*/
	fillupTimes = (miles / carGasMileage) / (gasTankSize * 7/8);
	roundUp(fillupTimes);

	/*display RoadTrip Results*/
	printf("So, you're taking a trip to the Beach?\n");
	printf("Are you interested in how long it is going to take?\n");
	printf("It will take %5.0f minutes\n\n", travelTime);

	printf("Dude, Do you want to know how much it is going to cost?\n");
	printf("It will cost $%4.2f\n\n", travelcost);

	

	printf("You are going to have to fill up %3.2f times on your way there.\n\n", fillupTimes);


	return 0;
}

int roundUp()
{
	float a1, a2;
	int b1;

	
	
	b1 = a1;
	a2 = a1 - b1;

	if (a2 > 0.) b1++;
	
	
	
	
	return (b1);
}


float travelTime()
{
	int miles, averageSpeed, restTime;
	float time;
	
	if (miles > 0){
	time = (miles / averageSpeed) * MINUTES + restTime;
	}
	else 
		printf("You didn't go anywhere!");


	return (time);
}

float travelcost()
{
	int miles, carGasMileage;
	float pricePerGall = 1.40, cost, mealCost;

	if (miles > 0){
		cost = (miles / carGasMileage) * pricePerGall + mealCost;
	}
	else 
		printf("You didn't go anywhere!");

	return (cost);
}