C/C++ Girilen metinde her kelimenin kaç defa geçtiğini bulan program

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

int main(){
    
    char s[100];
    fgets(s,sizeof(s),stdin);
    
    char *words[100],*token=strtok(s," ");
    int i,j,x=0;

    while(token!=NULL){

        words[x++]=token;
        token=strtok(NULL," ");
    }
      
    int *dizi=calloc(x,sizeof(int));
    for(i=0;i<x;i++){
        dizi[i]++;
        for(j=i+1;j<x;j++){
             if(memcmp(words[i],words[j],strlen(words[i]))==0) {
                words[j]="0";
                dizi[i]++;
            }
        }

    }
    for(i=0;i<x;i++){
        if(words[i]!="0")
            printf("%s %d\n",words[i],dizi[i]);
    }


    return 0;
}