Thread: Search

Help me please:

Let's say I have this struct

Code:

struct Cars {
       
       char brand[30];
       char model[30];  
       char serial_number[30];
       } car[30];

I add the number of cars that i want...(...)

After, i want to make a search by brand, let's say I want to search for all the Ferrari cars that I added and I want that appear in the search all the model and serial numbers of the Ferraris that I've searched.

If there is not any car of the brand that I've searched I wan't that appear on the screen "car not found" or something like that.

I tried a couple of things but i still don't know how to do this kind of things.

I can't use pointers.

PS:I invented this example right now.

Very similar to searching through an array of strings, but in this case, you need to bring the specific struct member name, into it:

Code:

struct Cars {
       
       char brand[30];
       char model[30];  
       char serial_number[30];
       } car[30];

for(i=0;i<numOfCars;i++) {
   if((strcmp(car[i].brand, "Ford"))==0)
      printf("Ford: %s %s\n",car[i].model, car[i].serial_number);
}

Comparisons will be case sensitive, of course.

You need TWO strings in your call to strcmp(). Naturally, the name of the string is also a pointer to the base of the string, but pointers are everywhere in your system anyway, under the hood.

Code:

 if((strcmp(car[i].brand, "Ford"))==0)   //car[i].brand AND "Ford" are the two strings in my example. 
                                   //your call to strcmp() needs two strings, not one.

Well the problem wasn't in this piece of code...i had the j(number of cars) declared at 0 and that was why the programm didn't run because it was assuming that there were no cars.
Stupid mistake

Thank you to all of you