Practice Problem 16

Read it right next to your computer. Book version bitter C

learn through suffering C language learn through suffering
C language

Basics

Question 1-1

What is the term for the practice of combining multiple distinct types?

Program documentation

Question 2-1

Create a program that takes and displays the name, age, and gender of three people.
However, the data will be stored in a structure.
Data input and display will be handled by dedicated functions.

explanatory

Question 3-1

別々にDeclare variables.してもQuestionなくデータを記憶できるのに、
Briefly explain why structs are used.

Fundamentals (Answer Key)

Solution 1-1

struct

Program Documentation (Example Solution)

Solution 2-1

#include <stdio.h>
#include <string.h>

typedef struct
{
    char name[256];
    int age;
    int sex;
} People;

void InputPeople(People *data);
void ShowPeople(People data);

int main(void)
{
    People data[3];
    int i;

    for (i = 0; i < 3; i++)
    {
        InputPeople(&data[i]);
    }

    for (i = 0; i < 3; i++)
    {
        ShowPeople(data[i]);
    }

    return 0;
}

void InputPeople(People *data)
{
    printf("name:");
    scanf("%s", data->name);
    printf("Age:");
    scanf("%d", &data->age);
    printf("Gender(1-男性、2-女性):");
    scanf("%d", &data->sex);
    printf("\n");
}

void ShowPeople(People data)
{
    char sex[16];

    printf("name:%s\n", data.name);
    printf("Age:%d\n", data.age);

    if (data.sex == 1)
    {
        strcpy(sex, "男性");
    }
    else
    {
        strcpy(sex, "女性");
    }

    printf("Gender:%s\n", sex);
    printf("\n");
}

If this program were significantly expanded,
It is also possible to create an address book management program with sufficient practicality.

descriptive (answer)

Solution 3-1

It's convenient to manage related data together if you use a struct.

About This Site

Learning C language through suffering (Kushi C) is
This is the definitive introduction to the C language.
It systematically explains the basic functions of the C language.
The quality is equal to or higher than commercially available books.

Part 0: Program Overview

What is a program?