用c语言编写通讯录管理程序答:printf("\n已查到,记录为:"); printf("%-10s%-20s%-50s\n",one.name,one.tel,one.addr); printf("\n请输入新姓名、电话号码及住址:"); scanf("%s%s%s",one.name,one.tel,one.addr); fseek(fp,offset,SEEK_SET); printf("%ld",ftell(fp)); fprintf(fp,"%-10s%-20s%-50s\n",one.name,...