C++傪妛傏偆両

僗僐乕僾偲偼丄偦偺柤慜偑偳偺斖埻偱巊偊傞偐傪昞偟傑偡丅main娭悢偱愰尵偟偨曄悢傪丄懠偺娭悢偐傜偦偺傑傑巊偊傞偙偲偼弌棃傑偣傫丅

void test(){
	hogehoge = 1;
}

int main(){
	int hogehoge = 4;
}

徻嵶偵偼{}撪偱嬫愗傜傟偨斖埻偑儘乕僇儖曄悢偲側傝傑偡丅

#include <iostream>

using namespace std;

//int娭悢test
int main(){

	int a = 1;
	cout << a << endl;


	{
		int a = 4;
		cout << a << endl;
	}

	cout << a << endl;

}

幚峴寢壥偼埲壓偺捠傝偱偡丅

1
4
1

扐偟娭悢偺曄悢偼儘乕僇儖曄悢偲偟偰掕媊偡傞偙偲偼弌棃傑偣傫丅

僌儘乕僶儖曄悢

僌儘乕僶儖娭悢偲偼偳偺応強偐傜偱傕屇傃弌偡偙偲偑弌棃傑偡丅


#include <iostream>

using namespace std;

int a = 50;

int test(){

	cout << a <<endl;
	return 0;
}

int main(){

	cout << a << endl;
	test();

	getchar();
}

幚峴寢壥偼埲壓偺捠傝偱偡丅

50
50

傑偨丄僌儘乕僶儖曄悢偱晅偗偨柤慜偼儘乕僇儖偵傕嵞搙掕媊偡傞偙偲偑弌棃傑偡丅桪愭弴埵偼儘乕僇儖曄悢亜僌儘乕僶儖曄悢偲側傝傑偡丅儘乕僇儖曄悢傪巊梡偟偨偺偵僌儘乕僶儖曄悢傪梡偄偨偄帪偼丄::偺2偮偺僐儘儞傪梡偄傑偡丅

#include <iostream>

using namespace std;

int a = 50;

int main(){

	//僌儘乕僶儖曄悢偺a傪昞帵偡傞
	cout << a <<endl;

	int a = 10;

	//儘乕僇儖曄悢偺a傪昞帵偡傞
	cout << a << endl;

	//僌儘乕僶儖曄悢偺a傪昞帵偡傞
	cout << ::a << endl;

}

幚峴寢壥偼埲壓偺捠傝偱偡丅

50
10
50