usaa19exam/search_pizza.c

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

#define LINE_SIZE 100

struct pizza{ 
  float prize;
  char name[LINE_SIZE];
};

char* read_line();

int read_pizza(struct pizza* item);
int search_string(const char* heap, const char* needle);
char hacker_script(char c);


int main(){

  struct pizza* new_pizza= malloc(sizeof(struct pizza));

  printf("Zadaj hladanu surovinu:\n");
  char* name_of_cheque=read_line();

  for(int i = 0; i < strlen(name_of_cheque); i++){
        name_of_cheque[i]=hacker_script(name_of_cheque[i]);
  }
  
  name_of_cheque[strcspn(name_of_cheque,"\n")]=0;

  if(name_of_cheque!=0){
    int counter=0;

      printf("Zadaj jedalny listok:\n");
      while(read_pizza(new_pizza)){
        counter++;

        if(search_string(new_pizza->name,name_of_cheque)!=-1){
          printf("%s",new_pizza->name);
          printf("%.2f\n",new_pizza->prize);
        }
        
      }
      printf("Nacitanych %d poloziek.\n", counter);
  }
    
  free(new_pizza);
  free(name_of_cheque);
  return 0;
}

char* read_line(){
  char* line=(char*)malloc(LINE_SIZE);

  memset(line,0,LINE_SIZE);

  char* r = fgets(line,LINE_SIZE,stdin);

    if(r==NULL||strlen(line)==1){
      free(line);
      return 0;
    }
    else if (strlen(line)==LINE_SIZE-1 && line[LINE_SIZE]!='\n')
    {
      printf("string is too long\n");
    }
    else{
      
      return line;
    }
}

int read_pizza(struct pizza* item){
  char* name_of_dish= read_line();
  if(name_of_dish!=0){
    strcpy(item->name,name_of_dish);
    
    float value = strtof(read_line(),NULL);
    if(value!=0.0F){
      item->prize=value;
      return 1;
    }
    else return 0;
  }
  else return 0;
}

int search_string(const char* heap, const char* needle){

  int heap_lenght = strlen(heap);
  int needle_lenght = strlen(needle);

  for(int i = 0; i <= heap_lenght-needle_lenght; i++){
    int j;

    for(j = 0; j <= needle_lenght; j++){
      if( heap[i+j] != needle[j] && hacker_script(heap[i+j]) != needle[j]) break;

      if(j+1 == needle_lenght){ 
        return i;
      }
    }

  }

  return -1;
}

char hacker_script(char c){
  
  if(isupper(c)){
    c=tolower(c);
  }

  char numbers[] = "0123456789";
  char letters[] = "oizeasbtbq";

  for (int i = 0; i < 10; i++){
      if (c == numbers[i]){
          return letters[i];
      }
  }

  return c;

}