?? check.h
字號:
char keyword[17][10]=
{"void","int","double","unsigned","long","while","break","switch","case","continue",
"default","do","if","else","for","return","printf"};
int IsKeyword (char ch[])
{
for(int i=0;i<17;i++)
{
if(!strcmp(keyword[i],ch))
return 1;
}
return 0;
}
int IsConst(char ch[])
{
for(int i=0;i<MAX;i++)
{
if((ch[i]!='\0')&&(!Isdigit(ch[i]))) return 0;
}
return 1;
}
int IsID(char ch[])
{
int i=0;
while(ch[i])
{
if(!(ch[0]>=0x41&&ch[0]<=0x5A||ch[0]>=0x61&&ch[0]<=0x7A))
{
return 0;
break;
}
if(!(ch[i]>=0x41&&ch[i]<=0x5A||ch[i]>=0x61&&ch[i]<=0x7A||ch[i]>=0x30&&ch[i]<=0x39))
return 0;
i++;
}
if(ch&&strcmp(ch,"\0")) return 1;
else return 0;
}
//是ID時返回1,不是ID時返回0
char Sspecialsymbol[20][2]=
{"+","-","*","/","<","]",">","=","!",";","}",",","(",")","[","{",'\"'};
char Dspecialsymbol[13][5]=
{"<=",">=","==","!=","||","&&","++","--","%d","+=","-=","*=","/="};
int IsSymbol(char ch[])
{
int i=0;
while(i<=16)
{
if(!strcmp(Sspecialsymbol[i],ch)) return 1;
i++;
}
for(i=0;i<=12;i++)
{
if(!strcmp(ch,Dspecialsymbol[i])) return 1;
}
return 0;
}
void check(word& w)
{
if(IsKeyword(w.ch))
{
w.type=0;
strcpy(w.chname,"KEYWORD");
return;
}
if(IsID(w.ch))
{
w.type=1;
strcpy(w.chname,"VARIABLE");
return;
}
if(IsConst(w.ch))
{
w.type=2;
strcpy(w.chname,"CONST");
return;
}
if(IsSymbol(w.ch))
{
w.type=3;
strcpy(w.chname,"SYMBOL");
return;
}
w.type=4;
strcpy(w.chname,"ERRORSYM");
}
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