Parse Apache Config for DocumentRoot in C

So I am now on my second week of learning the C language. I have been writing a lot of small programs just to get the hang of the code. I have written simple calculators, guess my number games, and simple quizzes. Tonight I was working on code that could parse a apache config and only display the DocumentRoot. The code I wrote to do this is shown below.


#include <stdlib.h>
#include <string.h>
#define MAXLINE 128

FILE *file;

int main(int argc, char *argv[])
{

    int i,x;
    char line[MAXLINE];
    char * temp;

    if (argc == 1)
    {
        puts("You must enter a file/files to search.");
        exit(1);
    }
    for (i=1; i<argc;i++)
    {
        file = fopen(argv[i], "r");
        if (file == NULL)
        {
            puts("Could'nt open file");
            exit(1);
        }
        while ( (fgets(line, MAXLINE, file)) != NULL)
        {
            temp = malloc(sizeof (char) * 128);
            for (i=0; i<MAXLINE; i++)
            {
                do 
                {
                    temp[i] = line[i];
                    i++;
                } while (line[i] != '\n');
            temp[i] = '\0';
            break;
            }
            if (strstr(temp, "DocumentRoot") != NULL) {
                printf("%s\n", temp);
            }
            free(temp);
        }
    }
}