Char Array collecting position of an indivudal chracter.

**explosive** · 04-30-2004

Hi,

im trying to work out how to obtain the position in an array that an indivudal character(or number) is located.

For example:

Code:

char formula[100]; //this is array I want to search
int counter=0;
int x = 0;
	
	cout<<"enter linear forumla: ";
	cin>>formula;
	cout<<"forumla entered: "<<formula<<"\n\n";

//Testing for x variables

	for(counter=0;counter<sizeof(formula);counter++)
		{
		if(formula[counter] == 'x' )
		x++;

		}

 cout<<"\n"<<x;

Ive managed to count how many 'x''s there are in the array but I want to be able to work out the postition in the array they are (ie 0, 5, 12, 556! etc...)

I hope you understand what I mean

**Magos** · 04-30-2004

Code:

for(int i=0; i<sizeof(formula); i++)
{
  if(formula[i] == 'x')
  {
    std::cout << "x found at index " << i << std::endl;
  }
}

**explosive** · 04-30-2004

thanks for your answer

but when I try to compile I get this error:

type qualifier 'std' must be a struct or class name.

**Magos** · 04-30-2004

Did you include:

#include <iostream>

Note: Not iostream.h

**explosive** · 04-30-2004

ok, I jsut tried including #<iostream>, and it said it couldnt find the file, when i did #<iostream.h> it was ok with it but still got the same error about 'std'

**Magos** · 04-30-2004

<iostream> is the new standard header, <iostream.h> is an old one. If you have an old compiler, simply remove the std:: notation, ie: cout instead of std::cout.

**WaltP** · 05-01-2004

Just use the cout as you did in the rest of the program. Magos didn't read your code carefully enough and used a different form of the objects.

**arian** · 05-01-2004

if u want to know the number of an individual character then

Code:

   if(formula[count]=='x')
        x++;
        cout <<x;

and if u want the place of 'x' in the array then

Code:

    if(formula[count]=='x')
        cout << count ;

**explosive** · 05-01-2004

Hi all

it all works now thnx, Ive just realised how simple it was as well... I was being really silly

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