C program to create all numbers combinations from 1000- 3000 and read all numbers from .txt files to compare. if number exists on the .txt file dont print those numbers and print all the combinations to .txt out files. example number combination 1 2 3 4 1 2 3 5 1 2 3 6....

if 1 2 3 4 exist on .txt file the the output .txt file will only write 1 2 3 5 1 2 3 6

_Thank you!