5.3.4.cpp

c入门代码大全

 #include<stdio.h>
 int main()
 {
     int x,y;
     scanf("%d",&x);
     y=0;
     if(x>=0)
      {
              if(x>0)
                 y=1;
      }
     else
        y=-1;
     printf("%d",y);
     getchar();
     getchar();
 }