消除fread中的缓冲区溢出(C)

size_t fread(void *ptr, size_t size, size_t count, FILE *stream);

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

int main() {
    FILE *file = fopen("example.txt", "rb");
    if (!file) {
        perror("Failed to open file");
        return EXIT_FAILURE;
    }

    // 假设我们知道文件中的数据不会超过1000字节
    const size_t bufferSize = 1000;
    char *buffer = malloc(bufferSize);
    if (!buffer) {
        perror("Failed to allocate memory");
        fclose(file);
        return EXIT_FAILURE;
    }

    size_t bytesRead = fread(buffer, 1, bufferSize, file);
    if (ferror(file)) {
        perror("Error reading file");
    } else {
        printf("Read %zu bytes from file.\n", bytesRead);
        // 处理读取的数据...
    }

    free(buffer);
    fclose(file);
    return EXIT_SUCCESS;
}