Question

blizzard is a massive snowstorm. Definitions vary, but for our purposes, we will
assume that a blizzard is characterized by both winds of 30 mph or higher and
blowing snow that leads to visibility of 0.5 miles or less, sustained for at least
4 hours. Data from a storm one day has been stored in a file stormtrack.dat.
There are 24 lines in the file, one for each hour of the day. Each line in the file has
the wind speed and visibility at a location. Create a sample data file. Read this
data from the file and determine whether blizzard conditions were met during
this day or not.

Answer 1

#include<iostream>
#include<fstream>
using namespace std;
int main(){
ifstream f;
int flag1=0;
double w_speed,visibility;
f.open("blizzard.dat");
while( f >> w_speed >> visibility){ //>>operator reads the space separated double values from the file blizzard.dat
if(w_speed > 30 && visibility < 0.5) {
flag1=1;
break;
}
}
if(flag1==1){
cout<<"\nThere was a blizzard during the day\n\n";
}
else{
cout<<"\nBlizzard didn't occur during the day\n\n";
}
f.close();
return 0;
}
the file:blizzard.dat

12.6 0.3
25 0.89
23 0.75
20 0.68
18 0.98
19.9 0.96
20.5 0.90
21 0.82
24.9 0.4
26.2 0.45
32.3 0.36
38 0.29
30 0.39
26.11 0.45
21.22 0.56
18 0.66
19.37 0.55
20.3 0.58
19.54 0.54
20 0.51
21.63 0.55
19.3 0.5
19.55 0.54
20 0.54