CS 201 assignment

#include <iostream>
#include <stdlib.h>


using namespace std;


void printMenu() {
	cout << "1: First Grade" << endl; 
	cout << "2: Second Grade Grade" << endl; 
	cout << "3: Third Grade" << endl; 
	cout << "4: Fourth Grade" << endl; 
	cout << "5: Fifth Grade" << endl; 

}



int getMinRange (int grade) {
		
		
	if(grade == 1) {
		return 10;
	} else if(grade == 2) {
		return 100;
	} else if (grade == 3) {
		return 1000;
	} else if (grade == 4) {
		return 1000;
	} else if (grade == 5) {
		return 1000;
	}
	
	
} 


int getMaxRange (int grade) {
		
		
	if(grade == 1) {
		return 99;
	} else if(grade == 2) {
		return 999;
	} else if (grade == 3) {
		return 9999;
	} else if (grade == 4) {
		return 99999;
	} else if (grade == 5) {
		return 999999;
	}
	
}



const char getRandomOperator() {
	return "+-"[rand() % 2];
} 


int main() {

	// declaring variables
	int ques, sno, currentGrade, minR, maxR;
	
	printMenu();
	
	cout << "Please Select a Grade: " ;
	cin >> currentGrade;
	
	minR = getMinRange(currentGrade);	
	maxR = getMaxRange(currentGrade);
	
	cout << "Enter the number of questions you want to Generate: ";
	cin >> ques;
	
	int serial = 1;
	
	
	for(int i = 0; i < ques; i++ ) {
	
	
		int firstNum =  rand() % (maxR - minR + 1) + minR;

		int secNum = rand() % (maxR - minR + 1 ) + minR;
	
		char opr = getRandomOperator();
		
	
		
		cout << serial  << ".";
		
		if(opr == '+') {
			
			cout << "(" << firstNum << opr << secNum << ")" << ": ________ \t \t"; 
					
		} else if(opr == '-') {
			
			cout << "(" << firstNum << opr << secNum << ")" << ": ________ \t \t"; 
		
		}
		
		if((i+1) % 3 == 0) {
			cout << endl;
		}
		
		
		
		serial++;
	}


	
}