圆体积

#include<stdio.h>
int main(void)
{
    int i,n;
    double r,h,x;
    double cylinder(double r,double h);


    printf("Enter n:");
    scanf("%d",&n);


    for(i=1;i<=n;i++){
        printf("Enter r , h:");
        scanf("%lf%lf",&r,&h);


        if((r>0)||(h>0))
        {
            x=cylinder(r,h);
            printf("x=%.3f\n",x);
        }
        else{
        printf(Wrong!make it again \n);
        }
    }


    return 0;
}
double cylinder(double r,double h)
{
    double result;
    
    result=3.1415926*r*r*h;
    
    return result;
}
问题：为什么显示wrong没有定义，不是只是输出wrong就可以么