蓝桥杯 ADV-81 算法提高 数的运算

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
void func1(int *p) {
cout << (*p)*(*p) << " ";
}

void func2(int *p) {
printf("%.2lf ", sqrt(*p));
}

void func3(int *p) {
printf("%.2lf", 1.0 / (*p));
}

int main() {
int n;
cin >> n;
int *p = &n;
func1(p);
func2(p);
func3(p);
return 0;
}