Problems with file reading and strings

[Acolyte]

Alright, as a continuation of my previous question, I've got two problems with this program-the file read only reads the last line of the input file, and, when I try to assign a tokened word to a spot in the array, it returns a segmentation fault. Anybody know what I'm missing?

#include <stdio.h>
#include <string.h>
 
int main (void)
{
        FILE *file;
        file = fopen("input2.txt", "r");
 
        char tokenarray[100];
        char input[200];
        char *tokenPtr;
        int cnt;
 
        while(fgets(input, 100, file) != NULL)
        {
                fscanf(file, "%s", input);
        }
        fclose(file);
 
        printf("%s", input);
 
        tokenPtr = strtok(input, " ");
        while (tokenPtr != NULL)
        {
                tokenPtr = strtok(NULL, " ");
                for (cnt = 0; cnt < 100; cnt ++);
                {
                        *tokenPtr = tokenarray[cnt];
                }
        }
 
        printf("%s", tokenarray);
 
        return 0;
}

[horace1]

you were reading the file, doing nothing with the input and then closing it. So when you when onto tokenising you had the last line of the file

        while(fgets(input, 100, file) != NULL)
        {
                fscanf(file, "%s", input);
        }
        fclose(file);
etc
 

you then had problems with your pointers which caused segmentation errors
try this modified code

#include <stdio.h>
#include <string.h>
 
int main (void)
{
        FILE *file;
        file = fopen("input2.txt", "r");
       printf("start");
        char tokenarray[100];
        char input[200];
        char *tokenPtr;
        int cnt;
 
        while(fgets(input, 100, file) != NULL)
        {
                fscanf(file, "%s", input);
   //     }
    //    fclose(file);
 
 
        tokenPtr = strtok(input, " ");
        printf("%s\n", tokenPtr);
        while (tokenPtr != NULL)
        {
                tokenPtr = strtok(NULL, " ");
               // for (cnt = 0; cnt < 100; cnt ++);
              //  {
               //         *tokenPtr = tokenarray[cnt];
               // }
               printf("%s\n", tokenPtr);
        }
 
        //printf("%s", tokenarray);
       }
        fclose(file);   // <<<< move file close to here
        system("pause");
        return 0;
}
 

it reads the file and displays tokens - it is not quite correct but you can now try and fix it