PAT基础编程题目-7-1 厘米换算英尺英寸

题目详情

题目地址：https://pintia.cn/problem-sets/14/problems/781

解答

C语言版

#include<stdio.h>

void Conversion(int cm);

int main() {
   
	int cm;
	scanf("%d", &cm);
	Conversion(cm);
	return 0;
}
void Conversion(int cm) {
   
	int foot, inch;
	float m;
	m = (cm / 100.0) / 0.3048;  //换算成米再计算
	foot = m;
	inch = (m - foot) * 100;
	if (inch % 10 >= 5) //四舍五入
		inch = (m - foot) * 10 + 1;
	else 
		inch = (m - foot) * 10;
	printf("%d %d", foot, inch);
}

C++版

#include<iostream>
using namespace std;

void Conversion(int cm);

int main() {
   
	int cm;
	cin >> cm;
	Conversion(cm);
	return 0;
}
void Conversion(int cm) {
   
	int foot, inch;
	float m;
	m = (cm / 100.0) / 0.3048;  //换算成米再计算
	foot = m;
	inch = (m - foot) * 100;
	if (inch % 10 >= 5)  //四舍五入
		inch = (m - foot) * 10 + 1;  
	else 
		inch = (m - foot) * 10;
	cout << foot << " "<< inch;
}

Java版

import java.util.Scanner;
public class Main{
   
    private static void conversion(int cm) {
   
    	int foot, inch;
    	double m;
    	m = ((cm / 100.0) / 0.3048);
    	foot = (int)m;
    	inch = (int)((m-foot)*100);
    	if( inch % 10 >= 5)
    		inch = (int) ((m - foot) * 10 + 1);
    	else 
    		inch = (int) (m - foot) * 10;
		System.out.println(foot+" "+inch);
    }
	public static void main(String[] args) {
   
		int cm=0;
		Scanner scanner = new Scanner(System.in);
		if(scanner.hasNext()) 
			cm = scanner.nextInt();
		scanner.close();
		conversion(cm);
	}

}

通过上面的耗时对比来看，C语言确实是最快的，其次是C++，Java相比C来说，确实要慢太多了。

创作不易，喜欢的话加个关注点个赞，谢谢谢谢谢谢！