c语言linux读取配置文件

[database]
host=localhost
port=3306
user=admin
password=secret

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

typedef struct {
    char host[64];
    int port;
    char user[64];
    char password[64];
} DatabaseConfig;

void parse_ini_file(const char *filename, DatabaseConfig *config) {
    FILE *file = fopen(filename, "r");
    if (!file) {
        perror("Failed to open config file");
        return;
    }

    char line[256];
    char section[64] = "";
    while (fgets(line, sizeof(line), file)) {
        // Remove newline character
        line[strcspn(line, "\n")] = 0;

        if (line[0] == '[' && line[strlen(line) - 1] == ']') {
            strcpy(section, line + 1);
            section[strlen(section) - 1] = '\0';
        } else if (strcmp(section, "database") == 0) {
            char key[64], value[256];
            sscanf(line, "%[^=]=%s", key, value);
            if (strcmp(key, "host") == 0) strcpy(config->host, value);
            else if (strcmp(key, "port") == 0) config->port = atoi(value);
            else if (strcmp(key, "user") == 0) strcpy(config->user, value);
            else if (strcmp(key, "password") == 0) strcpy(config->password, value);
        }
    }

    fclose(file);
}

int main() {
    DatabaseConfig db_config;
    parse_ini_file("config.ini", &db_config);

    printf("Database Config:\n");
    printf("Host: %s\n", db_config.host);
    printf("Port: %d\n", db_config.port);
    printf("User: %s\n", db_config.user);
    printf("Password: %s\n", db_config.password);

    return 0;
}