Counting different words from a text input - c

Question

I want to do a code that searches a txt file and returns the number of different words and how many times they appear on the text.
I' trying to do that, but I'm having a problem on comparing the word read from the input with the words already read. So I'm doing a code that adds a word to the vector of words if is new, and if it isn't, it increments by 1 the word count. But when I'm comparing the words, it doesn't states that they're equal even when they aren't.
By exemple: txt is filled with:
test test test.
test test test.
("test." =/= from "test"). And it return 7 different words with 3 being NULL, "3 test" and 1 "test." . That should return 2 words and count 4 on test and count 2 on test.
Can anybody see what is wrong with my code?
#define MAX_PALAVRAS 1024
#define MAX_TAM_PALAVRA 32
typedef struct ocorrencia_ {
char palavra[MAX_TAM_PALAVRA];
int pos;
int num_ocorrencias;
}ocorrencia;
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
int main (int argc, char * argv[]){
ocorrencia palavras[MAX_PALAVRAS];
int i,palavras_diferentes=0,palavra_atual=0;
char aux[MAX_TAM_PALAVRA];
bool nova_palavra=true;
for (i=0;i<MAX_PALAVRAS;i++){
palavras[i].pos=-1;
palavras[i].num_ocorrencias=0;
}
FILE * D = fopen("input.txt","r");
while (!feof(D)){
char aux2[MAX_TAM_PALAVRA];
fscanf(D,"%s",aux);
for (i=0;i<palavras_diferentes;i++){
if (strcmp(palavras[palavras_diferentes].palavra,aux)==0){
nova_palavra=false;
break;
}
palavra_atual++;
}
if (nova_palavra){
strcpy(palavras[palavra_atual].palavra,aux);
palavras_diferentes++;
}
palavras[palavra_atual].num_ocorrencias++;
printf("%s\n",palavras[palavra_atual].palavra);
}
fclose (D);
printf("diferent words=%i\n",palavras_diferentes);
printf("success!\n");
return (EXIT_SUCCESS);
}
Thanks for taking or time reading or trying to help!

Answer 1

Following my comments, here are a few changes that may help you :
-Set palavra_atual to 0 and nova_palavra to true at the beginning of the while loop.
-Test the return of fscanf, add something like if(fscanf(D,"%s",aux)==1){...}
-Test all words ! if (strcmp(palavras[i].palavra,aux)==0)
Here goes the code :
#define MAX_PALAVRAS 1024
#define MAX_TAM_PALAVRA 32
typedef struct ocorrencia_ {
char palavra[MAX_TAM_PALAVRA];
int pos;
int num_ocorrencias;
}ocorrencia;
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
int main (int argc, char * argv[]){
ocorrencia palavras[MAX_PALAVRAS];
int i,palavras_diferentes=0,palavra_atual=0;
char aux[MAX_TAM_PALAVRA];
bool nova_palavra=true;
for (i=0;i<MAX_PALAVRAS;i++){
palavras[i].pos=-1;
palavras[i].num_ocorrencias=0;
}
FILE * D = fopen("input.txt","r");
while (!feof(D)){
palavra_atual=0;
nova_palavra=true;
char aux2[MAX_TAM_PALAVRA];
if(fscanf(D,"%s",aux)==1){
for (i=0;i<palavras_diferentes;i++){
if (strcmp(palavras[i].palavra,aux)==0){
nova_palavra=false;
break;
}
palavra_atual++;
}
if (nova_palavra==true){
printf("new word %d %s\n",palavra_atual,aux);
strcpy(palavras[palavra_atual].palavra,aux);
palavras_diferentes++;
}
palavras[palavra_atual].num_ocorrencias++;
printf("%s\n",palavras[palavra_atual].palavra);
}
}
fclose (D);
printf("diferent words=%i\n",palavras_diferentes);
printf("success!\n");
return (EXIT_SUCCESS);
}
You will be interesseted by ispunct() of ctypes.h here