{"id":41,"date":"2014-08-22T20:24:04","date_gmt":"2014-08-22T12:24:04","guid":{"rendered":"http:\/\/yangwang.tk:2333\/?p=41"},"modified":"2015-10-18T19:43:30","modified_gmt":"2015-10-18T11:43:30","slug":"%e5%9f%ba%e4%ba%8e51%e5%8d%95%e7%89%87%e6%9c%ba%e7%9a%84%e8%ae%a1%e7%ae%97%e5%99%a8-v0-3-%e5%9f%ba%e6%9c%ac%e8%bf%90%e7%ae%97%e7%9a%84%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/yangwang.hk\/?p=41","title":{"rendered":"\u57fa\u4e8e51\u5355\u7247\u673a\u7684\u8ba1\u7b97\u5668 v0.3 \u57fa\u672c\u8fd0\u7b97\u7684\u5b9e\u73b0"},"content":{"rendered":"

\u5728\u4e0a\u4e00\u8282\uff0c\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4e86\u5355\u7247\u673a\u7684\u952e\u76d8\u9a71\u52a8\uff0c\u73b0\u5728\u8ba9\u6211\u4eec\u5b9e\u73b0\u6700\u57fa\u7840\u7684\u8fd0\u7b97\uff1a<\/p>\n

+-*\/ ^ \u221a\uff0c\u4e0b\u9762\u662f\u952e\u76d8<\/p>\n

\"\"<\/a><\/p>\n

\u4e0a\u9762\u7684\u5c0f\u5b57\u662f\u7ec4\u5408\u952e\uff0c\u76ee\u524d\u53ea\u6709\u2018+\u2019\u548c\u7b2c\u4e00\u5217\u7ec4\u5408<\/p>\n

\u7a0b\u5e8f\u70b9\u6211\u4e0b\u8f7d<\/a><\/p>\n

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\u4fdd\u5b58\u5728\u4e86str\u8fd9\u4e2a\u5b57\u7b26\u6570\u7ec4\u4e2d\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u8ba1\u7b97\u524d\u9700\u8981\u5148\u628a\u6570\u5b57\u548c\u8fd0\u7b97\u7b26\u90fd\u63d0\u53d6\u51fa\u6765\u3002\u5176\u5b9e\u6709\u76f8\u5173\u7684\u8f6c\u6362\u51fd\u6570\uff0c\u4f46\u662f\u65e0\u6cd5\u8fbe\u5230\u6211\u7684\u8981\u6c42\uff0c\u4e8e\u662f\u6211\u5c31\u5199\u4e86\u4e00\u4e2achange\u51fd\u6570<\/p>\n

[\/c]uchar change(float *number ,char *str,uchar n)
\n{
\n\tuchar a=1;
\n\tfor(;str[n]>=’0’&&str[n]<=’9′;n++)
\n {
\n \t\t*number=*number*10+str[n]-‘0′;
\n\t}
\n \tif(str[n]==’.’)
\n \t{
\n \t\tfor(n++;str[n]>=’0’&&str[n]<=’9′;n++,a++)
\n\t\t*number=*number+(str[n]-‘0’)\/pow(10,a);
\n\t}
\n\treturn n;
\n}
\n[\/c]<\/p>\n

\u7b2c\u4e00\u4e2afor\u628a\u5c0f\u6570\u70b9\u524d\u7684\u6570\u5b57\u63d0\u53d6\u51fa\u6765\uff0c\u7b2c\u4e8c\u4e2afor\u5904\u7406\u5c0f\u6570\u70b9\u540e\u7684\u6570\u636e
\n\u6570\u5b57\u8f6c\u6362\u5b8c\u4e86\uff0c\u5c31\u8be5\u5e94\u8be5\u5f00\u59cb\u5904\u7406\u8ba1\u7b97\u4e86<\/p>\n

\r\nvoid calculate(uchar *str)\r\n{\r\n\tchar symbol;\r\n\tuchar n;\r\n\tfloat a=0,b=0;\r\n\tn=change(&amp;a,str,0);\r\n\tsymbol=str[n++];\r\n\tchange(&amp;b,str,n);\r\n\tswitch(symbol)\r\n\t{\/\/\u4e3a\u4e86\u7701\u4e00\u4e2afloat\u53d8\u91cf\u7684\u7a7a\u95f4\uff0c\u8fd9\u91cc\u7528a\u4fdd\u5b58\u8ba1\u7b97\u7ed3\u679c\r\n\t\tcase '+':a+=b;break;\r\n\t\tcase '-':a-=b;break;\r\n\t\tcase '*':a*=b;break;\t\t\t\t\r\n\t\tcase '\/':\t\r\n\t\tif(b==0)            \/\/\u4e0d\u80fd\u96640\r\n\t\tsymbol=-1;\r\n\t\telse\r\n\t\ta\/=b;\r\n\t\tbreak;\r\n\t\t\r\n\t\t\t\r\n\t\tcase  1 :\t\t\t\/\/\u5f00\u65b9\r\n\t\tif(a&gt;0)\r\n\t\ta=pow(b,1\/a);\r\n\t\telse if(a==0)\r\n\t\ta=1;\r\n\t\telse\r\n\t\tsymbol=-1;\t\r\n\t\tbreak;\r\n\r\n\t\tcase '^':a=pow(a,b);break;\r\n\t\tcase '%':a=(int)a%(int)b;break;\r\n\r\n\t\tcase '=':break;\r\n\tdefault:symbol=-1;\/\/symbol\u8fd9\u91cc\u7528\u4e8e\u4fdd\u5b58\u8ba1\u7b97\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u8d1f\u6570\u4ee3\u8868\u51fa\u9519\r\n\t}\r\n\tif(symbol==-1)\r\n\tsprintf(str,"syntax error");\r\n\telse \r\n\tsprintf(str,"%g",a);\r\n}\r\n<\/pre>\n
\u4e3a\u4e86\u7701\u5185\u5b58\uff0c\u53d8\u91cfa\u6700\u540e\u7528\u6765\u4fdd\u5b58\u7ed3\u679c<\/p>\n
\u8fd9\u4e2a\u51fd\u6570\u7684\u903b\u8f91\u5e76\u4e0d\u590d\u6742\uff0c\u8fd9\u91cc\u4e5f\u5c31\u4e0d\u591a\u8bb2\u4e86<\/p>\n
\u6709\u4e00\u70b9\u8981\u8bf4\u7684\u662f\uff0c\u5728\u5f00\u59cb\u8ba1\u7b97\u524d\uff0c\u6709\u8fd9\u4e48\u4e00\u6bb5<\/p>\n
\r\nwrite_order_1602(0x48);\r\nfor(i=0;i&lt;8;i++)\r\n{\r\nwrite_data_1602(table1[i]);\r\n}\r\n<\/pre>\n
\u56e0\u4e3a\u6211\u4eec\u7528\u4f5c\u663e\u793a\u5c4f\u76841602\u4e2d\u6ca1\u6709\u5f00\u65b9\u7684\u7b26\u53f7\uff0c\u4e8e\u662f\u6211\u5c31\u81ea\u5b9a\u4e49\u4e86\u4e00\u4e2a\uff0c1602\u4e00\u5171\u53ef\u4ee5\u5b9a\u4e498\u4e2a\u81ea\u5b9a\u4e49\u5b57\u7b26\uff0c\u5177\u4f53\u53ef\u4ee5\u770b1602\u7684\u8d44\u6599\u3002<\/p>\n
1602\u7684\u6db2\u6676\u7684\u4e00\u4e2a\u5b57\u7b26\u662f5*8\uff0c\u7528\u6765\u663e\u793a\u5e73\u65b9\u6839\u7684\u7b26\u53f7\u4e5f\u6709\u4e9b\u52c9\u5f3a\uff0c\u5c31\u8fd9\u6837\u51d1\u5408\u7528\u5427<\/p>\n
\"IMAG0097\"<\/a><\/p>\n
 <\/p>\n
\"IMAG0101\"<\/a><\/p>\n
\"IMAG0100\"<\/a><\/p>\n
\"IMAG0098\"<\/a><\/p>\n
\"IMAG0102\"<\/a><\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
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