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keyword problem

 
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keyword problem
naash
post 3 Sep, 2007 - 04:10 AM
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Q Write a function in C++ that takes a string type data argument and returns true if the string is a C++ keyword. The function returns a false value if the given string is not a C++ keyword .Do not use any predefined C/C++ header files except "iostream.h"

I did the following ..... tell me if its right. Also tell me an easier method if available.

CODE

int key_chk(char s[])
{
int flag=0;  
enum key={int=1,char,long,float,double,class,structure,private,union};
enum key i;
if(*s==(char)i)
  {
     flag=1;
     break;
  }
if(flag==0)
  {
     cout<<"Not a keyword";
     return 0;
  }
if(flag!=0)
  {
     cout<<" keyword";
     return 1;
  }
}
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Bench
post 3 Sep, 2007 - 05:16 AM
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You can start to tell whether its right or not by at least trying to compile it.

If you want a string literal, put it in-between double quotes, eg, "int", "float", "double", etc.
enums are based on integral types, so I can't see how that would help you with in this excercise.

You might find that an array of strings will help here, that you can use as a lookup table
const char* keywords[] = { "int", "float", "double" /* ... etc ... */ };

This post has been edited by Bench: 3 Sep, 2007 - 05:22 AM
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