計程作業第五章-3

[b7505002 (熱~~~~~~)]

#include <stdio.h>
#include <process.h>
void soil_type(void);
int main()
{
 soil_type();
 return 0;
 }
 void soil_type()
 {
        char *type[]={"Clay","Silt","Sand","Gravel"};
        double range[]={1.0e-10,1.0e-8,1.0e-4,1.0,100.0};
        double perm;
        int j,index;
        printf("Please input the value of permeability=?\n");
        scanf("%lf",&perm);
        if(perm<range[0]||perm>range[4]){
          printf("data out of ranfe the type is not defined\n");
          printf("The range of permeability is between %lf and %lf\n",range[0],range[4]);
          exit(1);
        }
        for(j=1; j<4;++j){
          if((perm>=range[j-1])&&(perm<range[j])){
                 index=j-1;
                 break;
          }
        }
        printf("The value of permeability is %lf\n",perm);
        printf("The type of the soil is %s\n",type[index]);
 }

--
※ 發信站: 批踢踢實業坊(ptt.twbbs.org) 
◆ From: pc86.na.ntu.edu