Thread: Trying to scan in user input after the '<' not working on gcc.

I am reading in a csv file, outputting a txt file and also reading in a text file to search for the keys that I have to output into the txt file.

So basically this is my code.
/* This is to read in the CSV file" */

Code:

while(fscanf(Data_input,"%d; %[^\n]",&weight,num) == 2){         
                insert(ptr,word,num);
        }

/*Now I want to read in the search key where read_word is declared as char array of size 500*/

Code:

while(scanf("%[^\n]", read_word) == 1){
        printf("%s\n", read_word);
    }

The command on stdin should look like this after compilation

./aout read.csv out.txt < search.txt

I am unable to read the search.txt. I tried using fscanf and now I am trying to use just scanf to see if anything happens but the command reads out null as there is no such this that exists on argv[4]? I know its not reading in the file since when I print it out it prints null and exits =(