help me!!!! how to compare array with the string?

[niceliang84]

Hi, i am currently doing a c++ program using Borland C++.
now i am facing a problem where i want to compare the keyword input from the user with the string that read from file.

this is a part of my codding that with error,

int position,py;
char keyPrompt[100];
 
input.open("a.dat");
  if (input.fail())
 {
  cout<<"Unable to open a file \n";
  exit(1);
  }//end if
 
  while(input>>alpha>>index)
  {
      Alpha[a].setkeyword(keyword);
      Alpha[a].setindex(index);
      a++;
      }//end while
    input.close();
 
 
 
cout<< enter keyword:";
cin>>keyPrompt;
 
for(py=0; py<a; py++)
     { //compare the first alphabet with the alphabet in file
      if(strcmp(keyPrompt[0],Alpha[py].getkeyword())==0)
 
          {//alphabet match
        position=py; //position in alpha array
         break;
       } //end if

i know that it is impossible to compare between keyPrompt[0] and string , but can anyone help me to search for another alternative that can use as similar as

strcmp(keyPrompt[0],Alpha[py],getkeyword())   

thanks!

[horace1]

what does Alpha[py].getkeyword() return, a char * or a C++ string?

as you are working in C++ why not just use string type? e.g.
Alpha[py].getkeyword()

[niceliang84]

what does Alpha[py].getkeyword() return, a char * or a C++ string?

as you are working in C++ why not just use string type? e.g.
Alpha[py].getkeyword()

char * in my program.....

char *Database::getkeyword()
{
return Keyword;
}; //method getkeyword

[horace1]

char * in my program.....

char *Database::getkeyword()
{
return Keyword;
}; //method getkeyword

keyPrompt[0] is a char and strcpy expects its parameters to be char *
should the compare

      if(strcmp(keyPrompt[0],Alpha[py].getkeyword())==0)
 

be

      if(strcmp(keyPrompt, Alpha[py].getkeyword())==0)
 

[niceliang84]

keyPrompt[0] is a char and strcpy expects its parameters to be char *
should the compare

      if(strcmp(keyPrompt[0],Alpha[py].getkeyword())==0)
 

be

      if(strcmp(keyPrompt, Alpha[py].getkeyword())==0)
 

yap... i know that but i juz wana compare "keyPrompt[0]" with the string that i get from .dat file.....
for example:
if user Input Login
i just wana detect if the first word (keyPrompt[0]) is same as the data that i get from .dat file where the structure of .dat file is as below

a idx1
b idx2
c idx3
d idx4
.
.
l
.
z idx24

like tat... got any way to write this kind of programing code?

[horace1]

if you wish to check character by character you could try

     if(strcmp(keyPrompt[0], Alpha[py].getkeyword()[0])==0)