关于c++赋值名字和年龄的问题

# include<iostream>
#include<ctime>
#include<cstdlib>
#include"swap.h"
#include<string>

using namespace std;


struct hero {
	string name;
	int age;
	string agend;
};
int main() {

	struct hero heroarray[5];
	void fuzhi(hero heroarray[], int len);
	int len = sizeof(heroarray) / sizeof(heroarray[0]);
	fuzhi(heroarray, len);
	void print(hero heroarray[], int len);
	print(heroarray, len);



		system("pause");
		return 0;
	}
void fuzhi(hero heroarray[], int len) {
	
	for (int i = 0; i < 5; i++) {
		string nameseed[5] = { "刘备", "关羽","张飞","赵云","貂蝉" };
		int ageseed[5] = {23,22,20,21,19 };
		string agendseed[5] = { "男","男","男","男","女" };
		heroarray[i].name += nameseed[i];
		heroarray[i].age += ageseed[i];
		heroarray[i].agend += agendseed[i];
		
	}

}
void print(hero heroarray[], int len) {
	for (int i = 0; i < 5; i++) {
		cout << "英雄的名字是" << heroarray[i].name << "英雄的年龄是" << heroarray[i].age << "英雄的性别是" << heroarray[i].agend << endl;
	}
}

 

 请问大佬我哪里做错了，为什么年龄没办法正常赋值？