1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
#pragma hdrstop
#pragma argsused
#include <iostream.h>
#include <math.h>
#include <string.h>
#include <fstream>
using namespace std;
ios::out;
ios::app;
double Distance(double, double, double, double);
class Place{
public:
char name[20], name1[20];
float Latitude;
float Longitude;
};
int i1 = 0, j1 = 0, k1 = 0, i = 0, j = 0, k = 0, m = 0, n = 0, v = 0, h = 0, a = 0, b = 0, c = 0, d = 0, e = 0, f = 0;
int main()
{
ofstream name("C:\Documents and Settings\05072295\My Documents\Borland Studio Projects\out.dat");
//ifstream name1("C:\Documents and Settings\05072295\My Documents\Borland Studio Projects\in.dat");
float C,F, Lat[2], Lon[2], TDistance;
char option, place1[20], place2[20];
Lat[0] = 0, Lat[1] = 0, Lon[0] = 0, Lon[1] = 0;
cout << "------**** Welcome to the World Distance Calculator ****------"<<endl<<endl;
cout << "This program enables you to calculate the distance between any"<<endl;
cout << "two cities in the world. Use the prompts below to navigate." << endl<<endl;
do{
cout << "If you would like to add a new entry >>>>>>>>>>>>>>>>>>>>>>>>>>>>> press 1"<<endl;
cout << "If you would like to find the distance between two places >>>>>>>> press 2"<<endl;
cout << "If you would like to display all the places in database >>>>>>>>>> press 3"<<endl;
cout << "If you wish to exit this program >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> press 4"<<endl<<endl;
cout << "Please enter an option number: ";
cin >> option;
cout << "" << endl;
switch (option)
{
case '1':
Place P1[10];
cout << "" << endl;
cout << "Enter Place Name: ";
cin >> P1[i++].name;
cout << "Enter Latitude Co-ordinate (in decimal degrees): ";
cin >> P1[j++].Latitude;
cout << "Enter Longitude Co-ordinate (in decimal degrees): ";
cin >> P1[k++].Longitude;
cout << "" << endl;
name << P1[i1++].name << P1[j1++].Latitude << P1[k1++].Longitude << endl;
// copy the out file into the in file
//strcpy(char P1.name, char*P1.name1);
break;
case '2':
cout << "" << endl;
cout << "Enter the The Name of the first place: ";
cin >> place1;
while ((e != 10)&&((place1[0] != P1[a].name[0])||(place1[1] != P1[b].name[1]))){
a++,b++,e++;
}
if (e > 9)
cout << "Place Not in Data Base!" << endl;
else
Lat[0] = P1[a].Latitude, Lon[0] = P1[b].Longitude ;
cout << " " << endl;
cout << "Enter the the name of the second place: ";
cin >> place2;
while ((f != 10)&&((place2[0] != P1[c].name[0])||(place2[1] != P1[d].name[1]))){
c++,d++,f++;
}
if (f > 9)
cout << "Place Not in Data Base!" << endl;
else
Lat[1] = P1[c].Latitude, Lon[1] = P1[d].Longitude;
cout << " " << endl;
TDistance = Distance(Lat[0],Lat[1],Lon[0],Lon[1]);
if (f > 9)
cout << "Distance could not be calculated";
else if (e > 9)
cout << "Distance could not be calculated";
else
cout << "Distance Between Place 1 And Place 2 is: " << TDistance << "Km";
cout << "" << endl;
cout << "" << endl;
while(e != 0 || a != 0 || b != 0){e--,a--,b--;}
while(f != 0 || c != 0 || d != 0){f--,c--,d--;}
break;
case '3':
cout << "Name Latitude Longitude";
cout << "" << endl;
if (i>0)
while (m < i){
cout << "" << endl;
//name >> P1[n++].name >>" " >> P1[v++].Latitude >> " " >> P1[h++].Longitude;
n--;
cout << P1[n++].name << endl ;
m++;}
else cout << "No Places Stored!";
while (m > 0){
m--,n--,v--,h--;}
cout << "" << endl;
cout << "" << endl;
break;
default:
cout << "" << endl;
cout << "Invalid option" << endl;
cout << "" << endl;
break;
}
}while (option !='4');
name.close();
}
double Distance(double L1, double L2, double Lon1, double Lon2)
{
double Lat1 = L1*(M_PI/180);
double Lat2 = L2*(M_PI/180);
double Long1 = Lon1*(M_PI/180);
double Long2 = Lon2*(M_PI/180);
return acos(sin(Lat1)*sin(Lat2)+cos(Lat1)*cos(Lat2)*cos(Long2-Long1))*6371;
} |
[debutant] Tableau avec indexation
Répondre avec citation
Là j'avoue je suis intrigué, c'est à la compile que ton fichier est effacé ? C'est pas plutôt lors de l'exécution de ton prog qui l'efface ?
(envisage peut etre l'utilisation d'un std::vector 
), j'ai horreur des "déclarations en rafales" (genre int i1,i2,i,j,k,m,n,v,h,a,b,c,d,e,f = 0
)
Partager