编译原理实验
words[j++] = ch; words[j]= '\0'; flag= 407;
}
else
{
i--;
flag = 408;
}
break;
}
case'+':{
if (ch == '+')
words[j++] = ch; words[j] = '\0'; ch= program[i++]; if (ch == '=')
{
words[j++] = ch;
words[j] = '\0'; flag= 409;
}
else if (ch == '+') {
words[j++] = ch;
words[j] = '\0'; flag= 410;
}
else
{
i--;
flag= 411;
}
break;
}
case'-':{
if (ch == '-')
words[j++] = ch;
words[j] = '\0';
ch= program[i++];
if (ch == '=')
{
words[j++] = ch;
words[j] = '\0';
flag = 412;
}
else if( ch == '-') {
words[j++] = ch;
words[j] = '\0';
flag = 413;
}
else
{
i--;
flag = 414;
}
break;
}
case'*':{
if (ch == '*')
words[j++] = ch;
words[j] = '\0';
ch= program[i++];
if (ch == '=')
{
words[j++] = ch;
words[j] = '\0';
flag = 415;
}
else
{
i--;
flag = 416;
}
break;
}
case'/':{
if (ch == '/')
words[j++] = ch;
words[j] = '\0';
ch= program[i++];
if (ch == '=')
{
words[j++] = ch;
words[j] = '\0';
flag= 417;
}
else
{
i--;
flag = 418;
}
break;
}
case';':{
words[j] = ch;
words[j+1] = '\0';
flag = 501;
break;
}
case'(':{
6
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