import java.io.*; public class snow{ public static void main(String args[]){ int c,b; BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); System.out.print("Please enter v of c:"); try{
c = (char) br.read(); }catch(IOException e){}; b=c+18; System.out.print("b="+b); } }
c = (char) br.read(); 改成c = (int) br.read(); 笔误
一样的,除非,你再定义c 之后和用到c之前对他显性初始化。 如:import java.io.*; public class snow{ public static void main(String args[]){ int c=0,b; System.out.print("Please enter v of c:"); try{ c=(int)System.in.read(); }catch(IOException e){}; b=c+18; System.out.print("b="+b); } }
import java.io.*; public class snow { public static void main(String args[]) throws IOException { int d,b; String c; BufferedReader keyin=new BufferedReader(new InputStreamReader(System.in)); System.out.println("Please enter v of c:"); c=keyin.readLine(); \\这里可输入多个数(其实是字符) d=Integer.parseInt(c); b=d+18; System.out.println("b="+b); } } 这样应该就没有问题了
import java.io.*;
public class snow{
public static void main(String args[]){
int c,b;
BufferedReader br = new
BufferedReader(new InputStreamReader(System.in));
System.out.print("Please enter v of c:");
try{
c = (char) br.read();
}catch(IOException e){};
b=c+18;
System.out.print("b="+b);
}
}
改成c = (int) br.read();
笔误
如:import java.io.*;
public class snow{
public static void main(String args[]){
int c=0,b;
System.out.print("Please enter v of c:");
try{
c=(int)System.in.read();
}catch(IOException e){};
b=c+18;
System.out.print("b="+b);
}
}
我输入4
结果B=70 输入5 B=71
有没有其他办法(除了将C减去0所对应ASCLL码序号)
public class snow {
public static void main(String args[]) throws IOException {
int d,b;
String c;
BufferedReader keyin=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Please enter v of c:");
c=keyin.readLine(); \\这里可输入多个数(其实是字符)
d=Integer.parseInt(c);
b=d+18;
System.out.println("b="+b);
}
}
这样应该就没有问题了