#include <apstring.h>
#include <apvector.h>

// problem #1
// precondition: a = 0;
int sumfunction(apvector <int> &vector, int a) {
	if (a == vector.length()) return 0;
	else return vector[a] + sumfunction(vector, a+1);
}

// problem #2
// precondition: row and column are both > 0, and column <= row
int pascaltriangle(int row, int col) {
	if (col == 1 || (row == col)) return 1;
	else return pascaltriangle(row-1, col-1)+pascaltriangle(row, col-1);
}

// problem #3
// precondition currentpost starts at 0
void makeupper(apstring &a, int currentpos) {
	if (currentpos == a.length()) return;
	else if (a[currentpos] >= 'a' && a[currentpos] <= 'z') 
		a[currentpos] += 'A'-'a';
}

int main() {

	return 0;
}