#include<iostream>
#include <fstream>
using namespace std;
struct SalaryInfo{
unsigned id;
double salary;
int ranges[500];
};
int main(){
SalaryInfo employee1 ={600001, 8000};
employee1.ranges[3] = 4;
employee1.ranges[13] = 44;
ofstream os("payroll", ios_base::out | ios_base::binary);
os.write(reinterpret_cast<char *>( &employee1), sizeof(employee1) );
os.close();
ifstream is("payroll", ios_base::out | ios_base::binary);
string s;
getline(is, s);
is.close();
char *data;
int len = s.length();
data = (char *)malloc((len+1)*sizeof(char));
s.copy(data,len,0);
SalaryInfo *employee2 = (SalaryInfo *) data;
std::cout << employee2->id << std::endl;
std::cout << employee2->ranges[3] << std::endl;
std::cout << employee2->ranges[13] << std::endl;
return 0;
}
c++ 存 读结构体
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