例如：
输入：
123 -789
输出：
123
-789
#include <iostream>
using namespace std;
int readint( ) {
int num = 0; // 存储读取到的整数
int negative = 0; // 负数标识
char c; // 存储当前读取到的字符
c = cin.get( );
while ((c < '0' || c > '9') && c != '-')
c = 1;
if (c == '-')
negative = 1;
else
2;
c = cin.get( );
while (3) {
4;
c = cin.get( );
}
if (negative == 1)
5;
return num;
}
int main( ) {
int a, b;
a = readint( );
b = readint( );
cout << a << endl << b << endl;
return 0;
} 
