Question

I am having some trouble comparing two variables, hope someone could help.

Basically what i do is:

printf("\n\n +* Introduza o %d Prato:", i + 1);

scanf("%s", &pratos_novo->prato);

ver=verifica_prato(pratos_novo->prato);
  if(ver == 1)
/*PROCESS*/

I put M1 when asked because the it does exist in .bin file

function call:

int verifica_prato(char* p) {

    k = (struct item*) malloc(sizeof(item));
        while((fread(k, 1, sizeof(item), f)) != NULL) {
            if((*k).id == p){
                fclose(f);
                return 1;
            }
        }
    fclose(f);
    return 0;
}

My goal is to return 1 when i put M1.

struct item:

struct item{
    char id[5];
    int ing[10];
    float qtd[10];
};

The problem is here : (*k).id==p), the values are never the same, and I am 100% sure that M1 does exist in the .bin file.

Answer 1

You are comparing pointers when you need to compare strings.

Replace if((*k).id==p) with if( strcmp( (*k).id, p) == 0 ) to compare the strings.