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c++ hashmaps

Shashank KR answered on February 12, 2022 Popularity 10/10 Helpfulness 4/10

answer c++ hashmaps

related hashmap c++

c++ hashmaps

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#include <iostream>
#include <unordered_map>
using namespace std;
 
int main()
{
    unordered_map<string, int> sample;
    sample["first"] = 10;
    sample["second"] = 20;
    sample["third"] = 30;
 
    for (auto val : sample)
      cout << val.first << " " << val.second << endl;
 
}

Popularity 10/10 Helpfulness 4/10 Language cpp

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Tags: c++

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Contributed on Apr 19 2022

Shashank KR

0 Answers Avg Quality 2/10

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hashmap c++

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//me 
using namespace std;								//or use std::unordered_map
unordered_map<string,int> map =  {{"one", 1}, {"two", 2}};	//init
map["abc"] = 0;										//insert/change
cout << map["abc"];									//access value
map.erase("abc");									//delete
if (map.find("abc") == map.end()){}					//if 'abc' is not in map
for(auto& i: map){}									//iterate

Popularity 10/10 Helpfulness 3/10 Language cpp

Source: Grepper

Tags: c++

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Contributed on Feb 12 2022

handsomedonkey

0 Answers Avg Quality 2/10

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