用c编写一个，#include <stdio.h> #include <string.h> #define N 100 struct birth { int year; int month; int day; }; struct person { char ID[19]; char name[20]; struct birth birthday; int flag;//校验位是否正确, 1代表正确，0代表错误 }; int read(struct person p[]) { FILE *fp; int count=0; fp=fopen("person.txt",'r'); if(fp==NULL){ printf("Failed to open file.\n"); return -1; } while(fscanf(fp,"%s%s%d%d%d%d",p[count].ID,p[count].name, &p[count].birthday.year,&p[count].birthday.month, &p[count].birthday.day,&p[count].flag)!=EOF){ count++; } fclose(fp); return count; } int checkID(char *ID) { int weight[18]={7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2};//ID号码权重 char checkcode[11]={1,0,'X',9,8,7,6,5,4,3,2};//校验码字符 int sum=0;//加权和 int i; if(strlen(ID)!=18){ return 0; } for(i=0;i<17;i++){ if(!isdigit(ID[i])){//isdigit=? return 0; } } for(i=0;i<17;i++){ // sum+=ID[i]*weight[i]; sum+=(ID[i]-'0')*weight[i]; } int code; code=sum%11; if(ID[17]==checkcode[code]){ return 1; } else{ return 0; } } struct birth get_birth(char *ID) { int i,j; struct birth b; char year_s[5]={0}, month_s[3]={0}, day_s[3]={0}; for(i=6,j=0;j<4;i++,j++){ year_s[j]=ID[i]; } for(i=10,j=0;j<2;i++,j++){ month_s[j]=ID[i]; } for(i=12,j=0;j<2;i++,j++){ day_s[j]=ID[i]; } //将字符串转换为整型 b.year=(year_s[0]-'0')*1000+(year_s[1]-'0')*100+ (year_s[2]-'0')*10+(year_s[3]-'0'); b.month=(month_s[0]-'0')*10+(month_s[1]-'0'); b.day=(day_s[0]-'0')*10+(day_s[1]-'0'); return b; } void get_all_person(struct person p[], int n) { int i; for(i=0;i<n;i++){ struct birth b=get_birth(p[i].ID); if(checkID(p[i].ID)){ p[i].birthday=b; p[i].flag=1; } else{ p[i].flag=0; } } }void save(struct person p[],int n); 将身份证号码正确的数据(身份证号码、姓名、出生年月日)写入文件person_checked.txt的函数。其中数组 p 中存放 n 个公民信息。

void save(struct person p[], int n) {
FILE *fp;
fp = fopen("person_checked.txt", "w");
if (fp == NULL) {
printf("Failed to open file.\n");
return;
}
int i;
for (i = 0; i < n; i++) {
if (p[i].flag == 1) {
fprintf(fp, "%s %s %d-%02d-%02d\n", p[i].ID, p[i].name, p[i].birthday.year, p[i].birthday.month, p[i].birthday.day);
}
}
fclose(fp);
}

相关问题

帮我写一个查找身份证省份的函数，输入地区编号，输出对应公民信息，主函数只能用来调用函数。#include <stdio.h> #include <string.h> #define N 100 struct birth { int year; int month; int day; }; struct person { char ID[19]; char name[20]; struct birth birthday; int flag;//校验位是否正确, 1代表正确，0代表错误 };每行代码注释清楚

好的，我来帮您写一个查找身份证省份的函数。

首先，需要准备一个存储公民信息的数组，该数组中每个元素存储一个公民的信息，包括身份证号、姓名、生日和校验位。

代码如下：

#define N 100

struct birth {
    int year;
    int month;
    int day;
};

struct person {
    char ID[19];
    char name[20];
    struct birth birthday;
    int flag; // 校验位是否正确，1代表正确，0代表错误
};

struct person citizens[N]; // 存储公民信息的数组

接下来，我们需要编写一个函数来根据地区编号查找对应的公民信息。假设地区编号为一个整数，函数原型如下：

void search_citizen(int area_code);

该函数的实现思路如下：

1. 遍历存储公民信息的数组，查找每个公民的身份证号中前6位是否与地区编号匹配。
2. 如果匹配，则输出该公民的信息，包括姓名、生日和校验位是否正确。

代码实现如下：

#include <stdio.h>
#include <string.h>
#define N 100

struct birth {
    int year;
    int month;
    int day;
};

struct person {
    char ID[19];
    char name[20];
    struct birth birthday;
    int flag; // 校验位是否正确，1代表正确，0代表错误
};

struct person citizens[N]; // 存储公民信息的数组

void search_citizen(int area_code) {
    int i;
    for (i = 0; i < N; i++) {
        char area[7];
        strncpy(area, citizens[i].ID, 6); // 截取身份证号前6位
        area[6] = '\0'; // 字符串结尾
        if (area_code == atoi(area)) { // 匹配地区编号
            printf("姓名：%s\n", citizens[i].name);
            printf("生日：%d年%d月%d日\n", citizens[i].birthday.year, citizens[i].birthday.month, citizens[i].birthday.day);
            if (citizens[i].flag == 1) {
                printf("校验位正确\n");
            } else {
                printf("校验位错误\n");
            }
        }
    }
}

int main() {
    // 在这里调用 search_citizen 函数，并传入地区编号参数
    search_citizen(110101);
    return 0;
}

其中，使用 `strncpy` 函数截取身份证号前6位，使用 `atoi` 函数将字符串转换为整数进行匹配。在主函数中，调用 `search_citizen` 函数，并传入地区编号参数。

用c编写程序开始时，自动从文件读入信息到结构体数组，并提取每个公民的出生年月放入结构体中，同时进行身份证校验位是否正确，判断信息也放入结构体中。补全主函数，#include <stdio.h> #include <string.h> #define N 100 struct birth { int year; int month; int day; }; struct person { char ID[19]; char name[20]; struct birth birthday; int flag;//校验位是否正确, 1代表正确，0代表错误 }; int read(struct person p[]); int checkID(char *ID); struct birth get_birth(char *ID); void get_all_person(struct person p[], int n); void display_person(struct person p[], int n, int flag); int birth_cmp(struct birth birth1, struct birth birth2); void birth_sort(struct person p[], int n); int search(struct person p[], int n, char *name); void save(struct person p[], int n); int prompt(void); int main(void) { struct person p[N]; int cmd, n; while (1) { cmd = prompt(); } return 0; }

补全的代码如下：

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

#define N 100 

struct birth {
    int year;
    int month;
    int day;
};

struct person {
    char ID[19];
    char name[20];
    struct birth birthday;
    int flag; // 校验位是否正确, 1代表正确，0代表错误
};

int read(struct person p[]);
int checkID(char *ID);
struct birth get_birth(char *ID);
void get_all_person(struct person p[], int n);
void display_person(struct person p[], int n, int flag);
int birth_cmp(struct birth birth1, struct birth birth2);
void birth_sort(struct person p[], int n);
int search(struct person p[], int n, char *name);
void save(struct person p[], int n);
int prompt(void); 

int main(void) {
    struct person p[N];
    int cmd, n; 
    
    while (1) {
        cmd = prompt();
        switch (cmd) {
            case 1: 
                n = read(p);
                break;
            case 2:
                get_all_person(p, n);
                break;
            case 3:
                birth_sort(p, n);
                break;
            case 4:
                display_person(p, n, 1);
                break;
            case 5:
                display_person(p, n, 0);
                break;
            case 6: 
                save(p, n);
                break;
            case 7:
                return 0;
            default:
                printf("Invalid command!\n");
                break;
        }
    }
    
    return 0;
}

int read(struct person p[]) {
    FILE *fp;
    char filename[20];
    int i = 0;
    
    printf("Enter the file name: ");
    scanf("%s", filename);
    
    fp = fopen(filename, "r");
    if (!fp) {
        printf("Failed to open file!\n");
        return 0;
    }
    
    while (fscanf(fp, "%s %s", p[i].ID, p[i].name) != EOF) {
        p[i].birthday = get_birth(p[i].ID);
        p[i].flag = checkID(p[i].ID);
        i++;
    }
    
    fclose(fp);
    printf("Read file successfully!\n");
    
    return i;
}

int checkID(char *ID) {
    int i, sum = 0, weight;
    int weight_list[] = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1};
    char check_list[] = "10X98765432";
    
    for (i = 0; i < 17; i++) {
        sum += (ID[i] - '0') * weight_list[i];
    }
    
    weight = sum % 11;
    
    if (ID[17] == check_list[weight]) {
        return 1;
    } else {
        return 0;
    }
}

struct birth get_birth(char *ID) {
    struct birth birthday;
    
    birthday.year = (ID[6] - '0') * 1000 + (ID[7] - '0') * 100 + (ID[8] - '0') * 10 + (ID[9] - '0');
    birthday.month = (ID[10] - '0') * 10 + (ID[11] - '0');
    birthday.day = (ID[12] - '0') * 10 + (ID[13] - '0');
    
    return birthday;
}

void get_all_person(struct person p[], int n) {
    int i;
    
    printf("All persons:\n");
    for (i = 0; i < n; i++) {
        printf("%s %s %d-%02d-%02d %s\n", p[i].ID, p[i].name, p[i].birthday.year, p[i].birthday.month, p[i].birthday.day, p[i].flag ? "correct" : "incorrect");
    }
}

void display_person(struct person p[], int n, int flag) {
    int i;
    
    printf("Persons with %s ID:\n", flag ? "correct" : "incorrect");
    for (i = 0; i < n; i++) {
        if (p[i].flag == flag) {
            printf("%s %s %d-%02d-%02d\n", p[i].ID, p[i].name, p[i].birthday.year, p[i].birthday.month, p[i].birthday.day);
        }
    }
}

int birth_cmp(struct birth birth1, struct birth birth2) {
    if (birth1.year != birth2.year) {
        return birth1.year - birth2.year;
    } else if (birth1.month != birth2.month) {
        return birth1.month - birth2.month;
    } else {
        return birth1.day - birth2.day;
    }
}

void birth_sort(struct person p[], int n) {
    int i, j;
    struct person temp;
    
    for (i = 0; i < n; i++) {
        for (j = i + 1; j < n; j++) {
            if (birth_cmp(p[i].birthday, p[j].birthday) > 0) {
                temp = p[i];
                p[i] = p[j];
                p[j] = temp;
            }
        }
    }
    
    printf("Sort by birthday successfully!\n");
}

int search(struct person p[], int n, char *name) {
    int i;
    
    for (i = 0; i < n; i++) {
        if (strcmp(p[i].name, name) == 0) {
            return i;
        }
    }
    
    return -1;
}

void save(struct person p[], int n) {
    FILE *fp;
    char filename[20];
    int i;
    
    printf("Enter the file name: ");
    scanf("%s", filename);
    
    fp = fopen(filename, "w");
    if (!fp) {
        printf("Failed to create file!\n");
        return;
    }
    
    for (i = 0; i < n; i++) {
        fprintf(fp, "%s %s %d-%02d-%02d %s\n", p[i].ID, p[i].name, p[i].birthday.year, p[i].birthday.month, p[i].birthday.day, p[i].flag ? "correct" : "incorrect");
    }
    
    fclose(fp);
    printf("Save file successfully!\n");
}

int prompt(void) {
    int cmd;
    
    printf("\nMenu:\n");
    printf("1. Read from file\n");
    printf("2. Display all persons\n");
    printf("3. Sort by birthday\n");
    printf("4. Display persons with correct ID\n");
    printf("5. Display persons with incorrect ID\n");
    printf("6. Save to file\n");
    printf("7. Quit\n");
    printf("Enter a command: ");
    scanf("%d", &cmd);
    
    return cmd;
}