c/c++ 结构体转化为字符串

将一个结构体转化为字符串，可以使用 sprintf 函数或者 stringstream 类。下面是一个使用 sprintf 函数的例子：

#include <stdio.h>

struct Student {
    char name[20];
    int age;
    float score;
};

int main() {
    struct Student stu = {"Tom", 18, 90.5};
    char str[100];

    sprintf(str, "Name: %s, Age: %d, Score: %.2f", stu.name, stu.age, stu.score);

    printf("%s\n", str);

    return 0;
}

输出结果：

Name: Tom, Age: 18, Score: 90.50

使用 stringstream 类的例子：

#include <iostream>
#include <sstream>

struct Student {
    std::string name;
    int age;
    float score;
};

int main() {
    struct Student stu = {"Tom", 18, 90.5};
    std::stringstream ss;

    ss << "Name: " << stu.name << ", Age: " << stu.age << ", Score: " << stu.score;

    std::cout << ss.str() << std::endl;

    return 0;
}

输出结果：

Name: Tom, Age: 18, Score: 90.5