C语言_获取文件大小

C语言_获取文件大小

int getFileSize(char * fileName)
{
	if (NULL == fileName)
	{
		printf("fileName is NULL.\n");
		return -1;
	}

	int size = 0;
	FILE * fp = fopen(fileName, "rb");
	if (NULL == fp)
	{
		printf("fopen %s failed.\n", fileName);
		return -1;
	}
	
	fseek(fp, 0L, SEEK_END); /**将文件指针移动到尾部**/
	size = ftell(fp);
	fclose(fp);
	return size;
}