P1039 譚浩強C語言(第三版)習題4.9

import java.util.*;
import java.io.*;
import java.math.BigInteger;

public class Main
{
    public static void main(String args[])
    {
        Scanner cin=new Scanner(System.in);
        double f=cin.nextDouble();
        
        System.out.printf("c=%.2f\n",5*(f-32)/9);
    }
}
 

P1040 譚浩強C語言(第三版)習題5.4

import java.util.*;
import java.io.*;
import java.math.BigInteger;

public class Main
{
    public static void main(String args[])
    {
        Scanner cin=new Scanner(System.in);
        int a=cin.nextInt(),b=cin.nextInt(),c=cin.nextInt();
        if(a<b) a=b;
        if(a<c) a=c;
        System.out.println(a);
    }
}
 

P1041 譚浩強C語言(第三版)習題5.5

import java.util.*;
import java.io.*;
import java.math.BigInteger;

public class Main
{
    public static void main(String args[])
    {
        Scanner cin=new Scanner(System.in);
        int x=cin.nextInt();
        if(x>=1)
        {
            if(x<10) x=x*2-1;
            else x=3*x-11;
        }
        System.out.println(x);
    }
}
 

P1042 譚浩強C語言(第三版)習題5.6

import java.util.*;

import javax.lang.model.util.ElementScanner6;

import java.io.*;
import java.math.BigInteger;

public class Main
{
    public static void main(String args[])
    {
        Scanner cin=new Scanner(System.in);
        int x=cin.nextInt();
        if(x>=90)
            System.out.println("A");
        else if(x>=80)
            System.out.println("B");
        else if(x>=70)
            System.out.println("C");
        else if(x>=60)
            System.out.println("D");
        else
            System.out.println("E");
    }
}

P1043 譚浩強C語言(第三版)習題5.7

import java.util.*;
import java.io.*;
import java.math.BigInteger;

public class Main
{
    public static void main(String args[])
    {
        Scanner cin=new Scanner(System.in);
        int x=cin.nextInt(),cnt=0;
        int[] arr=new int[10];
        do
        {
            arr[cnt++]=x%10;
            x/=10;
        }
        while(x!=0);
        System.out.println(cnt);
        for(int i=cnt-1;i>=0;--i)
        {
            if(i==0)
                System.out.print(String.valueOf(arr[i])+‘\n‘);
            else System.out.print(String.valueOf(arr[i])+‘ ‘);
        }
        for(int i=0;i!=cnt;++i)
        {
            System.out.print(arr[i]);
        }
    }
}

「題目代碼」P1039～P1043（Java）