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Exemplo de utilizacao de mapa em C++
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#include <iostream> | |
#include <map> | |
#include <string> | |
#include <iterator> | |
int main() | |
{ | |
std::map<std::string, int> mapaParametros; | |
// Inserindo dados | |
mapaParametros.insert(std::make_pair("param1", 10)); | |
mapaParametros.insert(std::make_pair("param2", 20)); | |
mapaParametros["param3"] = 30; | |
// Altera valor ja adicionado | |
mapaParametros["param1"] = 100; | |
// Iterador para elementos no mapa | |
std::map<std::string, int>::iterator it = mapaParametros.begin(); | |
while(it != mapaParametros.end()) | |
{ | |
std::cout<< "(" << it->first<<" = "<< it->second << ")"<< std::endl; | |
it++; | |
} | |
// Checando se a insercao foi com sucesso ou nauo | |
if(mapaParametros.insert(std::make_pair("param2", 20)).second == false) | |
{ | |
std::cout << "O elemento com a key param2 nao foi adicionado por ja existir" << std::endl; | |
} | |
// Searching element in std::map by key. | |
if(mapaParametros.find("param3") != mapaParametros.end()) | |
std::cout << "Parametro 3 encontrado" << std::endl; | |
if(mapaParametros.find("param4") == mapaParametros.end()) | |
std::cout <<"Parametro 4 não encontrado" << std::endl; | |
return 0; | |
} |
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