#include <iostream>

#include <math.h>

using namespace std;

//Calculator with 3 operation: (a^2,[a],a%b), using switch statements.

int main(){

int op;

cout << "Enter the operation: " << endl;

cin >> op; //^ => 1, [] => 2, % => 3

switch(op){

case 1: {

float n;

cout << "Enter the number: " << endl;

cin >> n;

cout << n*n;

}

break;

case 2: {

float n;

cout << "Enter the number: " << endl;

cin >> n;

cout << floor(n);

}

break;

case 3: {

int n;

int m;

cout << "Enter the numbers: " << endl;

cin >> n;

cin >> m;

cout << n%m;

}

break;

default: cout << "Wrong Input" << endl;

}

}