c语言运动会积分系统存储到txt文件中修改的代码模块

以下是一个简单的 C 代码模块，可以将运动会积分系统的数据存储到 txt 文件中，并且可以修改已有的数据：

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

#define MAX_TEAMS 100
#define MAX_NAME_LENGTH 20

struct Team {
    char name[MAX_NAME_LENGTH];
    int score;
};

struct Team teams[MAX_TEAMS];
int num_teams = 0;

void add_team(char *name) {
    if (num_teams >= MAX_TEAMS) {
        printf("Too many teams!\n");
        return;
    }

    strcpy(teams[num_teams].name, name);
    teams[num_teams].score = 0;
    num_teams++;
}

void print_teams() {
    printf("Team\tScore\n");
    for (int i = 0; i < num_teams; i++) {
        printf("%s\t%d\n", teams[i].name, teams[i].score);
    }
}

int find_team(char *name) {
    for (int i = 0; i < num_teams; i++) {
        if (strcmp(teams[i].name, name) == 0) {
            return i;
        }
    }
    return -1;
}

void update_score(char *name, int score) {
    int index = find_team(name);
    if (index == -1) {
        printf("Team %s not found!\n", name);
        return;
    }

    teams[index].score += score;
}

void save_data(char *filename) {
    FILE *fp = fopen(filename, "w");
    if (fp == NULL) {
        printf("Error opening file %s!\n", filename);
        return;
    }

    for (int i = 0; i < num_teams; i++) {
        fprintf(fp, "%s %d\n", teams[i].name, teams[i].score);
    }

    fclose(fp);
}

void load_data(char *filename) {
    FILE *fp = fopen(filename, "r");
    if (fp == NULL) {
        printf("Error opening file %s!\n", filename);
        return;
    }

    char name[MAX_NAME_LENGTH];
    int score;

    while (fscanf(fp, "%s %d", name, &score) == 2) {
        add_team(name);
        update_score(name, score);
    }

    fclose(fp);
}

int main() {
    load_data("scores.txt");

    char command[100];
    char name[MAX_NAME_LENGTH];
    int score;

    while (1) {
        printf("> ");
        scanf("%s", command);

        if (strcmp(command, "add") == 0) {
            scanf("%s", name);
            add_team(name);
        } else if (strcmp(command, "update") == 0) {
            scanf("%s %d", name, &score);
            update_score(name, score);
        } else if (strcmp(command, "print") == 0) {
            print_teams();
        } else if (strcmp(command, "save") == 0) {
            scanf("%s", name);
            save_data(name);
        } else if (strcmp(command, "quit") == 0) {
            break;
        } else {
            printf("Invalid command!\n");
        }
    }

    return 0;
}

这个代码模块提供了以下几个功能：

1. 添加一个新的队伍 `add [队伍名称]`。
2. 更新一个队伍的得分 `update [队伍名称] [分数]`。
3. 打印所有队伍的得分 `print`。
4. 将数据保存到指定的 txt 文件中 `save [文件名]`。
5. 退出程序 `quit`。

你可以根据需要对这个代码模块进行修改和扩展。