实验3

 

#include<stdio.h>
int main(void)
{
    int m,i;
    double x,y;    
     double cylinder(double x);
     printf("Enter m:");
    scanf_s("%d",&m);
     for(i=1;i<=m;i++){
    printf("Enter x:
");
    scanf_s("%Lf",&x);
    if(x<0){
           printf("you are worry");
        }
    else { 
        y=cylinder(x);
            printf("y=%.2f
",y);
        }
     
     }
return 0;
}
     double cylinder(double x)
     {
         double y;
    
          if(x<=50){
                y=0.53*x;
        }
          
        else{
            y=0.58*x;
        }
        
            return y;
        }