用C语言写一下

好的，以下是用C语言实现的代码示例：

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

#define MAX_SIZE 10

// 青年类
typedef struct {
    char name[20];
    int age;
    char gender[10];
    char profession[20];
    int achievement;
} Youth;

// 哈希表节点
typedef struct {
    char key[20];
    Youth value;
} HashTableNode;

// 哈希表
HashTableNode hashTable[MAX_SIZE];

// 哈希函数
unsigned int hash(char *key) {
    unsigned int hashVal = 0;
    while (*key != '\0') {
        hashVal = *key + 31 * hashVal;
        key++;
    }
    return hashVal % MAX_SIZE;
}

// 添加青年信息
void addYouthInfo(char *name, int age, char *gender, char *profession, int achievement) {
    unsigned int index = hash(name);
    strcpy(hashTable[index].key, name);
    strcpy(hashTable[index].value.name, name);
    hashTable[index].value.age = age;
    strcpy(hashTable[index].value.gender, gender);
    strcpy(hashTable[index].value.profession, profession);
    hashTable[index].value.achievement = achievement;
}

// 删除青年信息
void deleteYouthInfo(char *name) {
    unsigned int index = hash(name);
    if (strcmp(hashTable[index].key, name) == 0) {
        hashTable[index].key[0] = '\0';
        hashTable[index].value.name[0] = '\0';
    }
}

// 查找青年信息
Youth *findYouthInfo(char *name) {
    unsigned int index = hash(name);
    if (strcmp(hashTable[index].key, name) == 0) {
        return &hashTable[index].value;
    } else {
        return NULL;
    }
}

// 更新青年信息
void updateYouthInfo(char *name, int age, char *gender, char *profession, int achievement) {
    unsigned int index = hash(name);
    if (strcmp(hashTable[index].key, name) == 0) {
        hashTable[index].value.age = age;
        strcpy(hashTable[index].value.gender, gender);
        strcpy(hashTable[index].value.profession, profession);
        hashTable[index].value.achievement = achievement;
    }
}

// 排名青年信息
void rankYouthInfo() {
    Youth topTen[10];
    int i, j, k;
    for (i = 0; i < 10; i++) {
        topTen[i].achievement = -1;
    }
    for (i = 0; i < MAX_SIZE; i++) {
        if (hashTable[i].key[0] != '\0') {
            for (j = 0; j < 10; j++) {
                if (hashTable[i].value.achievement > topTen[j].achievement) {
                    for (k = 9; k > j; k--) {
                        topTen[k] = topTen[k - 1];
                    }
                    topTen[j] = hashTable[i].value;
                    break;
                }
            }
        }
    }
    printf("排名前十的青年信息：\n");
    for (i = 0; i < 10; i++) {
        printf("%d. %s, %d岁, %s, %s, 成就：%d\n", i + 1, topTen[i].name, topTen[i].age, topTen[i].gender, topTen[i].profession, topTen[i].achievement);
    }
}

int main() {
    // 添加青年信息
    addYouthInfo("张三", 25, "男", "程序员", 100);
    addYouthInfo("李四", 28, "男", "产品经理", 90);
    addYouthInfo("王五", 23, "女", "市场营销", 95);

    // 查找青年信息
    Youth *youth = findYouthInfo("张三");
    if (youth != NULL) {
        printf("%s, %d岁, %s, %s, 成就：%d\n", youth->name, youth->age, youth->gender, youth->profession, youth->achievement);
    }

    // 更新青年信息
    updateYouthInfo("张三", 26, "男", "架构师", 120);
    youth = findYouthInfo("张三");
    if (youth != NULL) {
        printf("%s, %d岁, %s, %s, 成就：%d\n", youth->name, youth->age, youth->gender, youth->profession, youth->achievement);
    }

    // 删除青年信息
    deleteYouthInfo("李四");
    youth = findYouthInfo("李四");
    if (youth == NULL) {
        printf("李四的信息已被删除！\n");
    }

    // 排名青年信息
    rankYouthInfo();

    return 0;
}

以上是一个简单的实现过程，具体实现可能需要根据具体需求进行调整和优化。