C语言,文件操作编程题,请教一下这个程序该怎么写?答:代码文本:include "stdio.h"int main(int argc,char *argv[]){ FILE *fp;int t[21],i,j,k,n;if(!(fp=fopen("numbers.txt","r+"))){ printf("Open the file failure, exit...\n");return 0;} printf("The original sequence is as follows:\n");for(n=0;fscanf(fp,"%d",...