A1002 string length

On the right side shows a program we have a basically completed, reads a character string, called a call str_lenfunction to calculate the length of this string, and outputs.

Smart you should have discovered, the called str_lenfunction is not complete, without modifying the function prototype, complete str_lenfunction, we realize the functions described above it.

Sample inputcopy

abcdefg

Sample Outputcopy

7 
c ++ example

#include <iostream>
using namespace std;

Int Str_len (char * Str);

int main(){
char *str = new char[100];
cin>>str;
cout<<str_len(str);
delete str;
return 0;
}

IAVA example

import java.util.*;
public class Main{
public static void main(String args[]){
Scanner input = new Scanner(System.in);
String str = input.nextLine();
System.out.println(str_len(str));
}
static int str_len(String str)
{
//请在这里完成代码

}

}

 1 #include <iostream>
 2 using namespace std;
 3 
 4 int str_len(char *str);
 5 
 6 int main(){
 7     char *str = new char[100];
 8     cin>>str;
 9     cout<<str_len(str);
10     delete str;
11     return 0;
12 }
13 
14 int str_len(char *str){
15     //Please complete your function here 
16        int I = 0 ;
 . 17      for (; STR [I] = NULL;! I ++ )
 18 is      {
 . 19      }
 20 is      return I;
 21 is }

 

import java.util.*;

public class Main{
    public static void main(String args[]){
        Scanner input = new Scanner(System.in);
        String str = input.nextLine();
        System.out.println(str_len(str));
    }
    static int str_len(String str)
    {
        //请在这里完成代码
        return str.length();
    }

}