これが私がこれまでに持っているものです。唯一のビルドの問題は、コードの最後の行である 95 行目です。ファイル内の行を数え、データから配列を作成し、ユーザー入力から最大値と最小値の配列を表示しようとしています。
#include "stdio.h"
#include "stdlib.h"
struct earthquake_t
{
float lat;
float lng;
float dep;
float mag;
};
FILE* fid;
int main(void)
{
double lat,lng, dep,mag;
double userminlat,userminlng,usermaxlat,usermaxlng,minlat,minlng,maxlat,maxlng, ch,line,count
struct earthquake_t *earthquake;
int i;
fid=fopen("day.txt","r");
while (!feof(fid))
{
line = fscanf(fid,"%lf, %lf, %lf, %lf\n",&lng,&lat,&dep,&mag);
count = fscanf(fid," %lf %lf %lf %lf\n",&lng,&lat,&dep,&mag);
if (count ==4)
{
line ++;
}
}
fseek(fid,1,SEEK_SET);
printf("%d\n",sizeof(struct earthquake_t));
earthquake = (struct earthquake_t *)malloc(sizeof(struct earthquake_t)*line);
for (i=0;i<line;i++)
{
sscanf("fid", "%lf %lf %lf %lf\n",&lng,&lat,&dep,&mag,
earthquake[i].lat,
earthquake[i].lng,
earthquake[i].dep,
earthquake[i].mag);
if(earthquake[i].lng >maxlng)
{
maxlng = earthquake[i].lng;
}
if(earthquake[i].lng >minlng)
{
minlng = earthquake[i].lng;
}
if(earthquake[i].lat >maxlat)
{
maxlat = earthquake[i].lat;
}
if(earthquake[i].lat >minlat)
{
minlat = earthquake[i].lat;
}
}
printf("Longitude is between %f and %f\n",minlng,maxlng);
printf("Latitude is between %f and %f\n\n",minlat,maxlat);
printf("Give a value for min longitude: ");
scanf("%d",userminlng);
printf("Give a value for max longitude: ");
scanf("%d",usermaxlng);
printf("Give a value for min latitude: ");
scanf("%d",userminlat);
printf("Give a value for max latitude: ");
scanf("%d",usermaxlat);
FILE *fid2;
fid2=fopen("subset.txt","w");
for (i=0;i<line;i++)
{
if((earthquake[i].lng > userminlng) && (earthquake[i].lng < usermaxlng))
{
if((earthquake[i].lat > userminlat) && (earthquake[i].lat < userminlat))
{
fprintf( "subset.txt" ,"%f,%f,%f,%f \n", earthquake[i].lat, earthquake[i].lng, earthquake[i].dep, earthquake[i].mag); //error
}
}
}
}