oracle11g版本: SQL:select wmsys.wm_concat(t.id) from test_yc t 通用版本: declare cursor c_sql is select id from test_yc; v_id varchar2(50) default null; v_concat_id varchar2(1000); begin ope
A. Abstract Picture time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Famous abstract painter Va Sya plans to start new
一篇短文,有三行文字,每行有80个字符。统计出其中英文大写字母,小写字母,数字,空格以及其他字符各有多少。 #include<stdio.h> int main() { int i, j,a,b,c,w,other; //int a = 0; int b = 0; int c = 0; int s= 0;int other = 0; a = b = c = s = other = 0; char