scanf()中不能加‘\n’,关于thread 一点用法

#define _CRT_SECURE_NO_WARNINGS
#include <windows.h>  
#include <process.h>  
#include <stdio.h>  


unsigned int value1 = 0;
unsigned int value2 = 100000;
int a, b;
void print1(void* t)
{
while (1){
printf("&value1 = %x, value1 = %d\n", &value1, value1);
value1 +=a;
Sleep(1000);
}
}


void print2(void* t)
{
while (1){

value2 -= b;
printf("&value2 = %x, value2 = %d\n", &value2, value2);
Sleep(1000);
}
}
int main()
{

scanf("%d%d", &a, &b);
printf("%d,%d\n", a, b);
_beginthread(print1, 0, NULL);

_beginthread(print2, 0, NULL);


while (1)
Sleep(0);


return 1;
}