char array comparison returns false even for char[] equal - C

Question

I am a beginner in C, I am doing a college activity and trying to compare a data obtained via scanf with a data saved in a registry array that I believe but even entering the same value, always returns false, independent of the comparison method.

my struct:

// Struct Veiculo
typedef struct
{
  char marca[50];
  char modelo[50];
  int anofab;
  Placa placa;
} Veiculo;

// Struct Veiculos (Container para veículo)
typedef struct
{
  int count;
  Veiculo v[10];
} Veiculos;

Where I get the value:

Veiculos frota;
char temp[50];
printf("Insira o modelo: ");
scanf("%s", &temp);
filtrarmodelo(&frota, temp);

Where do I compare:

void filtrarmodelo(Veiculos *frota, char modelo[50])
{
  printf("\n\n---------- [LISTANDO MODELO SELECIONADO] ----------\n\n");

  // Se não houver veículos, cai aqui
  if (frota->count == 0)
  {
    printf("\nNada para mostrar aqui :(\n\n");
  }

  else
  {
    for (int i = 0; i < frota->count; i++)
    {
      // Compara o modelo inserido com os modelos salvos anteriormente
      if (strcmp(frota->v[i].modelo, modelo))
      {
        printf("%s %s, %d. Placa %s-%s\n\n",
               frota->v[i].marca,
               frota->v[i].modelo,
               frota->v[i].anofab,
               frota->v[i].placa.letras,
               frota->v[i].placa.numeros);
      }
      else
      {
        printf("\nNenhum modelo encontrado :(\n\n");
      }
    }
  }
}

The output I got at the last run was that no model was found.

Answer 1

The problem is that the function strcmp() returns the value 0 if the two strings are equal, and in C, the value 0 represents the false, then the right way to compare is: strcmp(stringA, stringB) == 0, this code returns true if both of them strings be equal.
Code working, adapted, because it lacked things in the question, with a test example:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct
{
    char marca[50];
    char modelo[50];
    int anofab;
} Veiculo;

typedef struct
{
    int count;
    Veiculo v[10];
} Veiculos;


void filtrarmodelo(Veiculos *frota, char modelo[50])
{
    printf("\n\n---------- [LISTANDO MODELO SELECIONADO] ----------\n\n");
    
    if (frota->count == 0)
    {
        printf("Nao ha carros na frota.\n");
        return;
    }
    else
        for (int i = 0; i < frota->count; i++)
        {
            printf("%s - %s\n", frota->v[i].modelo, modelo);
            if (strcmp(frota->v[i].modelo, modelo) == 0)
                printf
                (   
                    "%s %s, %d.\n",
                    frota->v[i].marca,
                    frota->v[i].modelo,
                    frota->v[i].anofab
                );
            else
                printf("Nenhum modelo encontrado.\n");
        }
}
int main()
{
    Veiculos frota;
    frota.count = 1;
    Veiculo veiculoNovo = { .marca = "Ab",  .modelo = "Cd", .anofab = 2022};
    frota.v[0] = veiculoNovo;

    char temp[50];
    printf("Insira o modelo: ");
    scanf("%s", temp);
    filtrarmodelo(&frota, temp);

    system("pause");
    return 1;
}

---

Input
Cd

---

Output

---------- [LISTANDO MODELO SELECIONADO] ----------

Cd - Cd
Ab Cd, 2022.