代码
//write
void write_file(const std::string file_name){
FILE *fp = nullptr;
fp = fopen(file_name.c_str(),"w+");
fprintf(fp,"This is testing for mutex\n");
fclose(fp);
}
//read
void read_file(const std::string file_name){
std::ifstream fp(file_name,std::ios::binary);
std::stringstream ss;
ss << fp.rdbuf();
std::cout << ss.str() << std::endl;
fp.close();
}