描述
The input file will contain an unknown number of lines with at most 1000 characters on each line. All the characters will be printable ASCII characters.
输入
The input file contains some lines.
Note that the input file will always exist, but may be empty.
输出
The number of lines in the input file.
样例输入
one
and two
three
样例输出
3
高手们这个该怎么做啊？？没思路厄

Chinese Please

int main(){
    int cont=0;
    char str[1009];
    while(~scanf("%s",str)){
        cont++;
    }
    printf("%d\n",cont);
    return 0;
}

为什么没输出的啊？？？什么时候才回输出那个结果啊？

#include <fstream>
#include <string>

using namespace std;

int main()
{
    string line;
    int lineCnt = 0;
    ifstream fin("test.in");
    ofstream fout("test.out");

    while (getline(fin, line))
    {
        ++lineCnt;
    }

    fout << lineCnt << endl;

    return 0;
}

你是用什么编译的啊？？看不懂

当你输入完数据后 按ctrl+z并按回车键就能输出了

你看不懂？？不会把？？

就是输出一共多少行。。。。