using system; using system.collections.generic; using system.text; using system.io; using microsoft.win32; using system.text.regularexpressions; using system.xml.xsl; using system.xml; using system.configuration; using system.data; using system.diagnostics;
using microsoft.visualbasic;
/*------------------------------------------------ http://blog.csdn.net/zhzuo --------------------------------------------------*/ namespace zhzuo.vs2005test.consoletest { class program {
static void main(string[] args) { int y = -1; system.console.writeline( "请输入 x的值 "); string s = system.console.readline(); int i; if (int32.tryparse(s, out i) == true)//c# 2.0中的语法 { if (i > 0) { y = 1; } else if (i == 0) { y = 0; } system.console.writeline(y); } else { system.console.writeline( "输入的值不合法! "); }