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Simple example of vectors in C++ (size, adding elements, traversing)
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/* | |
About: A simple tutorial of using vectors (c++ STL) | |
Author: Mubbashir10 | |
URL: http://mubbashir10.com | |
*/ | |
//libraries | |
#include <iostream> | |
#include <vector> | |
//defining namespace | |
using namespace std; | |
//main function | |
int main(){ | |
//declaring vector | |
vector <int> machar; | |
//printing size | |
cout<<"Size of machar before adding elements "<<machar.size()<<endl; | |
//adding elements | |
machar.push_back(1); | |
machar.push_back(2); | |
machar.push_back(3); | |
machar.push_back(4); | |
machar.push_back(5); | |
//printing size | |
cout<<"Size of machar after adding elements "<<machar.size()<<endl; | |
//printing elements | |
cout<<"Elements of machar (via index) "<<endl; | |
cout <<machar[0]<<endl; | |
cout <<machar[1]<<endl; | |
cout <<machar[2]<<endl; | |
cout <<machar[3]<<endl; | |
cout <<machar[4]<<endl; | |
//traversing | |
cout<<"Elements of machar (via iterator) "<<endl; | |
vector<int>::iterator point; | |
point = machar.begin(); | |
while(point!=machar.end()){ | |
cout<<point[0]<<endl; | |
point++; | |
} | |
//exiting | |
return 0; | |
} |
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