c++学习,class和struct区别

最新推荐文章于 2024-06-07 10:05:28 发布

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本文从C语言出发，逐步展示了如何使用结构体和数组来组织数据，最终过渡到C++中的类。通过多个示例程序，介绍了从简单打印到使用类的方法来表示个人信息的过程。

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由C语言过渡到c++.

c程序的编写

1 第一个c程序 Person.c

#include <stdio.h>


int main(int argc, char **argv)
{
char *zs_name = "zhangsan";
int zs_age = 10;


char *ls_name = "lisi";
int ls_age = 16;


printf("name = %s, age = %d\n", zs_name, zs_age);
printf("name = %s, age = %d\n", ls_name, ls_age);

return 0;
}

2第二个c程序 Person2.c

#include <stdio.h>


int main(int argc, char **argv)
{
char *names[] = {"zhangsan", "lisi"};
char ages[] = {10, 16};
char *work[] = {"teacher", "doctor"};

int i;


for (i = 0; i < 2; i++)
{
printf("name = %s, age = %d\n", names[i], ages[i]);
}

return 0;
}

3第二个c程序 Person3.c

#include <stdio.h>

struct person {
char *name;
int age;
char *work;

void (*printInfo)(struct person *per);
};

void printInfo(struct person *per)
{
printf("name = %s, age = %d, work = %s\n", per->name, persons[i].age, persons[i].work);
}
int main(int argc, char **argv)
{
struct person persons[] = {
{"zhangsan", 10, "teacher"},
{"lisi", 16, "doctor"},
};

int i;

for (i = 0; i < 2; i++)
{
printf("name = %s, age = %d, work = %s\n", persons[i].name, persons[i].age, persons[i].work);
}

return 0;
}

4第二个c程序 Person4.c

#include <stdio.h>

struct person {
char *name;
int age;
char *work;

void (*printInfo)(struct person *per);
};

void printInfo(struct person *per)
{
printf("name = %s, age = %d, work = %s\n", per->name, per->age, per->work);
}
int main(int argc, char **argv)
{
struct person persons[] = {
{"zhangsan", 10, "teacher", printInfo},
{"lisi", 16, "doctor", printInfo},
};

persons[0].printInfo(&persons[0]);
persons[1].printInfo(&persons[1]);

return 0;
}

5第二个c程序 Person5.cpp

#include <stdio.h>

struct person {
char *name;
int age;
char *work;

void printInfo(void)
{
printf("name = %s, age = %d, work = %s\n", name, age, work);
}
};

int main(int argc, char **argv)
{
struct person persons[] = {
{"zhangsan", 10, "teacher"},
{"lisi", 16, "doctor"},
};

persons[0].printInfo();
persons[1].printInfo();

return 0;
}

6第二个c程序 Person6.cpp

#include <stdio.h>

class person {
public:
char *name;
int age;
char *work;

void printInfo(void)
{
printf("name = %s, age = %d, work = %s\n", name, age, work);
}
};

int main(int argc, char **argv)
{
struct person persons[] = {
{"zhangsan", 10, "teacher"},
{"lisi", 16, "doctor"},
};

persons[0].printInfo();
persons[1].printInfo();

return 0;
}

```