5.3.2.cpp

c入门代码大全

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