I have the following program where I defined a vector of class Point. I pushed into this vector five Point instances, with their Ids. Then I tried to search by Id but didn't get the expected result. The following program didn't return anything.
#include<iostream>
#include<vector>
using namespace std;
class Point {
private:
int id;
public:
Point(){}
void setId(int k){ id=k; }
int GetId() { return id; }
};
int main()
{
vector<Point> datasets;
for(int i=0; i< 5; ++i){
Point temp;
temp.setId(i);
datasets.push_back(temp);
}
for(int i=0;i<5;i++){
if (datasets[i].GetId() ==4){
return i;
}
}
}
Your program is probably working just fine, I think you're mixing up return with cout to actually print it out to the console, currently you're not printing anything and you're just returning i to the OS because you use return in main, making it a status code.
To see the output, use cout:
#include<iostream>
#include<vector>
using namespace std;
class Point{
private:
int id;
public:
Point(){}
void setId(int k){id=k;}
int GetId(){return id;}
};
int main()
{
vector<Point> datasets;
for(int i=0; i< 5; ++i){
Point temp;
temp.setId(i);
datasets.push_back(temp);
}
for(int i=0;i<5;i++){
if (datasets[i].GetId() ==4){
cout << "i is : " << i << endl;
break;
}
}
}
Edit to answer OP's comment:
use : vector<Point> datasets(5);
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