Function will not call correctly, C - arrays

Question

I am a beginner and am doing pretty bad in my class right now, I just can't get some of this stuff down. I am working on one of the final homeworks and can't figure out the problem with my code. It's probably really messy but the main thing I'm having trouble with right now is the getArea function. It won't run correctly when I call it and says 'expected expression before int'. Any help is greatly appreciated, thanks
//This program takes 18 numbers and puts it in a single dimensional array and a two dimensional array.
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#define COLMAX 3
#define ROWMAX 6
double triArea(double a, double b, double c);
double checkValidation(double a, double b, double c);
double func1(double values[][COLMAX], int);
int main(void)
{
unsigned int seed;
double tArea = 0.0;
int rand_int();
int loop;
int col;
int row;
int counter = 0;
srand(time(NULL));
int RandomArray[18];
int ArrayTwo[6][3];
printf("\nOne dimensional array\n");
for(loop = 0; loop < 18; loop++)
{
RandomArray[loop] = rand_int();
printf("%d ", RandomArray[loop]);
}
printf("\nTwo dimensional array\n");
for(row = 0; row < ROWMAX; row++)
{
for(col = 0; col < COLMAX; col++)
{
ArrayTwo[row][col] = RandomArray[counter];
counter++;
//int total = 0;
//total = total + array2[row][col];
printf("%d\t", ArrayTwo[row][col]);
getArea(ArrayTwo[row][col]);
//printf("The total is %d", total);
}
printf("\n");
}
printf("\n");
double total = 0.0;
double ArrayTwoTotal[ROWMAX][COLMAX];
total = func1(ArrayTwoTotal, ROWMAX);
printf("total is %.2lf \n", total);
system ("PAUSE");
return 0;
}
double checkValidation(double a, double b, double c)
//triangleValueA + triangleValueB >= triangleValueC) && (triangleValueB + triangleValueC >= triangleValueA) && (triangleValueA + triangleValueC >= triangleValueB
{
int count = 0;
//a = base, b = height, c = area
if ((a + b >= c) && (b + c >= a) && (a + c >= b))
{
}
}
//Calculate area of a triangle
double getArea(int[int][int])
{
double base, height, area;
area = base*height/2.0;
printf("The area is %.lf\n", area);
checkValidation(base, height, area);
return area;
}
//Function to get the totals of the 1 dimensional array
double func1(double ArrayTwoTotal[][COLMAX], int rows)
{
double sum = 0.0;
int i, j;
for(i = 0 ; i < rows ; i++)
{
for(j = 0 ; j < COLMAX ; j++)
{
sum += ArrayTwoTotal[i][j];
}
}
return sum;
}
//Function to find a random number
int rand_int()
{
int x = 0;
x = ((rand() % 100)+1);
return x;
}

Answer 1

There are a lot of things that you need to look at.
First getArea() function doesn't have any declaration. Please declare it first and in a correct way.