Question

I`m having problems converting a char array read from file to an int array. Maybe someone can help me. This is my code:

char vectorPatron[67];
int iPatrones[67];
archivo = fopen("1_0.txt", "r");
for(i=0;i<67;i++){
    fscanf(archivo, "%c", &vectorPatron[i]);
    printf("%c",vectorPatron[i]);
}
fclose(archivo);
for(i=0;i<67;i++){
    iPatrones[i] = atoi(&vectorPatron[i]);
    printf("%d",iPatrones[i]);
}

Answer 1

That’s because atoi receives a null-delimited string, while you are passing it a pointer to a single char (both are essentially char *, but the intent and use are different).

Replace the call to atoi with iPatrons[i] = vectorPatron[i] - '0';

Also, you can remove the vectorPatrons array, simply read into a single char in the first loop and then assign to the appropriate place in the iPatrons array.