tmp = 2/4;竟然没有发现的

我还纠结着单目运算符和双目运算符和乘除的一些优先级什么事情。

#include "common.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

//#define
static float Mathematical_modeling = ;
static int   capacitance_modeling  = ;
static float value = ;
static char  car = 'A';
static float bus_num = -1000.123;
static int   China_population = -;
static float x = 2.5, y = 4.7;
static int a = ;

int main()
{

    int tmp =  / ;
    //x+y
    printf("类型转换is %f\n",x+a%*(int)(x + y)%/);
    printf("tmp is %d\n", tmp);

    while ()
    {
        getchar();
    }

    return ;
}