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

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

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