"maps in c++" Code Answer's
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map c++
Passionate Amoeba
on Aug 22, 2020
#include <iostream>
#include <string>
#include <map>
using std::string;
using std::map;
int main() {
// A new map
map<string, int> myMap = { // This equals sign is optional
{"one", 1},
{"two", 2},
{"three", 3}
};
// Print map contents with a range-based for loop
// (works in C++11 or higher)
for (auto& iter: myMap) {
std::cout << iter.first << ": " << iter.second << std::endl;
}
}map of maps c++
Hilarious Hyena
on Aug 19, 2020
map <typename,map<typename,typename>> mp;
map[key1][key2]=valuesmap in c++
Weary Wolf
on Dec 04, 2020
#include <bits/stdc++.h>
#include <iostream>
#include <map>
using namespace std;
void mapDemo(){
map<int, int> A;
A[1] = 100;
A[2] = -1;
A[3] = 200;
A[100000232] = 1;
//to find the value of a key
//A.find(key)
//to delete the key
//A.erase(key)
map<char, int> cnt;
string x = "Sumant Tirkey";
for(char c:x){
cnt[c]++;//map the individual character with it's occurance_Xtimes
}
//see how many times a and z occures in my name
cout<< cnt['a']<<" "<<cnt['z']<<endl;
}
int main() {
mapDemo();
return 0;
}basic ex of maps in c++
Worrisome Wombat
on Jun 12, 2020
#include <iostream>
#include <iterator>
#include <map>
using namespace std;
int main()
{
map<int, int> marks;
marks.insert(pair<int, int>(160, 42));
marks.insert(pair<int, int>(161, 30));
marks.insert(pair<int, int>(162, 40));
marks.insert(pair<int, int>(163, 50));
marks.insert(pair<int, int>(164, 31));
marks.insert(pair<int, int>(165, 12));
marks.insert(pair<int, int>(166, 34));
map<int, int>::iterator itr;
cout << "nThe map marks is : n";
cout << "ROLL NO.tMarksn";
for (itr = marks.begin(); itr != marks.end(); ++itr) {
cout << itr->first
<< "t t" << itr->second << 'n';
}
cout << endl;
return 0;
}
Source: www.edureka.co
map in cpp
Zany Zebra
on Nov 11, 2020
#include <map>
int main(){
//new map
std::map <int,int> myMap;
myMap[0] = 1;
myMap[1] = 2;
myMap[2] = 3;
myMap[3] = 4;
}map at function c++
okon1230
on May 07, 2021
// map::at
#include <iostream>
#include <string>
#include <map>
int main ()
{
std::map<std::string,int> mymap = {
{ "alpha", 0 },
{ "beta", 0 },
{ "gamma", 0 } };
mymap.at("alpha") = 10;
mymap.at("beta") = 20;
mymap.at("gamma") = 30;
for (auto& x: mymap) {
std::cout << x.first << ": " << x.second << '\n';
}
return 0;
}Source: www.cplusplus.com
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