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

int main(void)
{
    FILE *file;
    char txt_file[256]; //location
    char text[100];  //text to read from file
    
/***************askforfile()***************/    
int askforfile() ///File location procedure.
{   
    printf("\nFile?: ");
    scanf("%s",txt_file); 
    if(!strstr(txt_file,".txt"))
    { 
     printf("Please enter a .txt file.\n");
     askforfile(); 
    }
}
/***************askforfile()***************/

for(;;) //main loop.  main job.
{
        askforfile();
        file = fopen(txt_file, "r");
        if ( file == NULL) 
        { 
             printf("Error in locating file.\n"); 
             askforfile(); 
        }   
        while(fgets(text, 100, file) != NULL )
        { 
        printf("Contents: %s",text);   
        }
   }
   system("pause"); 
   fclose(file);
   return 0; 
}