摘要： 1.运用数列极限的概念运算0.383838……,可看作 0.38+0.0038+0.000038……，所以利用公式 S=a1/(1-q),可得 0.38/(1-0.01),即 38/990.437373737…… = 0.4 + 0.037 + 0.00037…… = 0.4 + 0.037 / ( 1 - 0.01 ) = 0.4 + 37 / 990 = 396 / 990 + 37 / 990 = 433 / 9902.作差0.383838……0.383838…… * 100 = 38.383838……0.383838…… * 1 = 0.383838…... 阅读全文

摘要： OS：win后缀名为a改为后缀名为b的*.bat:ren *.a *.b拷贝到对应目录下直接运行即可。OS：Linux将gif改为jpg:#!/bin/shfor image in *.gifdocjpeg $image > ${image%%gif}jpgdoneexit 0拷贝到对应目录下运行即可。 阅读全文

摘要： libqt4libqt4-debuginfolibqt4-debugsourcelibqt4-devellibqt4-devel-doclibqt4-devel-doc-datalibqt4-qt3supportlibqt4-sqllibqt4-sql-mysqllibqt4-sql-postgresqllibqt4-sql-sqlitelibqt4-sql-unixODBClibQtWebKit4libQtWebKit-develqt4-x11-toolsscim-bridge-qt 阅读全文

摘要： Packman: http://packman.inode.at/suse/openSUSE_12.2/Update: http://download.opensuse.org/update/12.2/Games: http://download.opensuse.org/repositories/games/openSUSE_12.2/Oss: http://download.opensuse.org/distribution/12.2/repo/oss/Non-oss: http://download.opensuse.org/distribution/12.2/repo/non-oss/ 阅读全文

摘要： #include <stdio.h>int main(){ unsigned int temp; int Max,Min; Min=0x7fffffff+1; Max=0x7fffffff; printf("IntMax is %d\n",Max); printf("IntMin is %d\n",Min); temp=(unsigned int)-1; Max=temp>>1; Min=~(temp>>1); printf("IntMax is %d\n",Max); printf("I 阅读全文