116.C语言异常抛错

#include <stdlib.h>
#include <stdio.h>
#include <setjmp.h>

//异常抛错检测
jmp_buf buf1;

double devide(double num1,double num2)
{
    if (num2 == 0)
    {
        //跳转到异常处
        longjmp(buf1, 1);
    }
    else
    {
        printf("res=%f", num1 / num2);
    }
}

void main()
{
    //异常处理
    if (setjmp(buf1) == 1)
    {
        printf("除数不能为0
");
        return;
    }

    devide(9, 0);
    system("pause");
}